e*thirteen
(https://ethirteen.com) 📸 Data Snapshot: May 30, 2026
Semantic Coherence — The Lens
Pull the main entities out of the H1, then check whether they actually recur through the body. A page that announces one thing and then talks about another drifts. Headings with no real sentences underneath read as pseudo-substance.
Semantic Coherence
Homepage promise vs. Sub-page reality.
20
Impact Weight: 20 / 100
100% Reputation
There is virtually zero semantic drift between the homepage and sub-pages. The homepage H1 e*thirteen MTB Components and its hero focus on performance engineering are immediately validated by technical deep-dives on the Wheels and MTB Wheels pages. The promise of anti-kickback technology on the homepage is supported by detailed mechanical explanations of the Sidekick freehub mechanism on sub-pages.
Semantic Coherence is read from the heading hierarchy first: what each page announces in its H1 and headings, then whether the body actually delivers on it. Below is the structure the engine mapped, followed by the clean text to check for drift between promise and reality.
🏗️ Semantic Structure — heading hierarchy & page identity (the promise the page makes)
HOMEPAGE e*thirteen Mountain Bike Components: Engineered for Performance (https://ethirteen.com)
Title
e*thirteen Mountain Bike Components: Engineered for Performance
Meta
Premium mountain bike parts & components engineered for performance. Shop e*thirteen's innovative Sidekick hubs and MTB and eMTB parts trusted by riders & racers worldwide.
H1 e*thirteen MTB Components
H2 NEW SIDEKICK FLUX WHEELS
H2 Memorial Day Sale
H2 Grappler Tires
H2 Sidekick
H2 Wheel Goods
H2 Drivetrain
H2 Rider Contact
H2 express yourself. in color.
H3 Memorial Day Sale
H3 Grappler Gen3 + Radial Tires
H3 Sidekick 2.0
H3 Free Shipping Details
H3 Carbon Rim Warranty
H3 Helix Race 3-Bolt Direct Mount Chainring (SRAM® crank compatible)
H3 Helix Race 12-Speed 9-50T Cassette
H3 Composite Base Pedal
H3 Quick Fill Presta Tubeless Valves
H3 Helix Race Direct Mount Chainring
H3 Plus 35 Stem
H3 Race Carbon Handlebar
H3 Helix Race e*spec Alloy Cranks
H3 Helix Race 12-Speed 9-45T Cassette
H3 Aluminum Plus Pedal
H3 Quick Fill Schrader Tubeless Valves
H3 Helix Race Alloy Cranks
NAV_HEADER_HEADING_REPEATED Award-Winning Wheels for MTB, E-MTB, and Gravel Adventures (https://ethirteen.com/collections/wheels/)
Title
Award-Winning Wheels for MTB, E-MTB, and Gravel Adventures
Meta
Sidekick hubs eliminate pedal kickback. Flux rims absorb impacts. Wheels for MTB, E-MTB, and gravel in carbon and alloy. Tool-free service. Lifetime carbon warranty.
H1 Wheels
H2 More about e*thirteen Wheels
H3 Memorial Day Sale
H3 Grappler Gen3 + Radial Tires
H3 Sidekick 2.0
H3 Free Shipping Details
H3 Carbon Rim Warranty
H3 Grappler Sidekick Flux Carbon Enduro Wheels (2025)
H3 Grappler Sidekick Flux Carbon Enduro Wheels – Front (2025)
H3 Grappler Sidekick Flux Aluminum Enduro Wheels (2025)
H3 Grappler Sidekick Flux Aluminum Enduro Wheels – Front (2025)
H3 Grappler Sidekick Flux Carbon Downhill Wheels (2025)
H3 Grappler Sidekick Flux Carbon Downhill Wheels – Front (2025)
H3 Grappler Sidekick Flux Aluminum Downhill Wheels (2025)
H3 Grappler Sidekick Flux Aluminum Downhill Wheels – Front (2025)
H3 Sylvan Sidekick Race Carbon All Mountain Wheels (2025)
H3 Sylvan Sidekick Race Carbon All Mountain Wheels – Front (2025)
H3 Sylvan Sidekick Race Aluminum All Mountain Wheels (2025)
H3 Sylvan Sidekick Race Aluminum All Mountain Wheels – Front (2025)
H3 Sylvan Race Alloy e*spec All Mountain Wheels
H3 Piedmont Race Carbon Gravel Wheels
H3 Piedmont Race Alloy Gravel Wheels
H3 Grappler Sidekick Flux Aluminum GR Front MTB Wheel
H3 Grappler Sidekick Flux Aluminum GR Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR DH Front MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR DH Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR Enduro Front MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR Enduro Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR DH Front MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR DH Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR Enduro Front MTB Wheel
NAV_HEADER_REPEATED_FOOTER Award-Winning MTB Wheels Engineered from Hub to Rim (https://ethirteen.com/collections/mountain-bike-wheels/)
Title
Award-Winning MTB Wheels Engineered from Hub to Rim
Meta
MTB wheels with Sidekick anti-kickback hubs and compliant Flux rims. Mountain bike wheels for Downhill, Enduro, All Mountain, and Trail. Carbon or aluminum.
H1 MTB Wheels
H2 More about e*thirteen MTB Wheels
H3 Memorial Day Sale
H3 Grappler Gen3 + Radial Tires
H3 Sidekick 2.0
H3 Free Shipping Details
H3 Carbon Rim Warranty
H3 Grappler Sidekick Flux Carbon Enduro Wheels (2025)
H3 Grappler Sidekick Flux Carbon Enduro Wheels – Front (2025)
H3 Grappler Sidekick Flux Carbon Downhill Wheels (2025)
H3 Grappler Sidekick Flux Carbon Downhill Wheels – Front (2025)
H3 Sylvan Sidekick Race Carbon All Mountain Wheels (2025)
H3 Sylvan Sidekick Race Carbon All Mountain Wheels – Front (2025)
H3 Grappler Sidekick Flux Aluminum Enduro Wheels (2025)
H3 Grappler Sidekick Flux Aluminum Enduro Wheels – Front (2025)
H3 Grappler Sidekick Flux Aluminum Downhill Wheels (2025)
H3 Grappler Sidekick Flux Aluminum Downhill Wheels – Front (2025)
H3 Sylvan Sidekick Race Aluminum All Mountain Wheels (2025)
H3 Sylvan Sidekick Race Aluminum All Mountain Wheels – Front (2025)
H3 Grappler Sidekick Flux Aluminum GR Front MTB Wheel
H3 Grappler Sidekick Flux Aluminum GR Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR DH Front MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR DH Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR Enduro Front MTB Wheel
H3 Grappler Sidekick Pro Flux Aluminum GR Enduro Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR DH Front MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR DH Rear MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR Enduro Front MTB Wheel
H3 Grappler Sidekick Pro Flux Carbon GR Enduro Rear MTB Wheel
H3 Optimus Sidekick Pro Flux Carbon Trail Front MTB Wheel
H3 Optimus Sidekick Pro Flux Carbon Trail Rear MTB Wheel
NAV_HEADER_REPEATED_FOOTER Discount Deals on MTB, E-MTB, and Gravel Components (https://ethirteen.com/collections/discount-bike-parts/)
Title
Discount Deals on MTB, E-MTB, and Gravel Components
Meta
e*thirteen MTB parts sale on wheels, cassettes, cranks, and more. No e*thirteen discount code required; these prices are already as low as they go. Shop now.
H1 Discount Bike Parts
H2 More about e*thirteen Discount Bike Parts
H3 Memorial Day Sale
H3 Grappler Gen3 + Radial Tires
H3 Sidekick 2.0
H3 Free Shipping Details
H3 Carbon Rim Warranty
H3 Helix Plus 12-Speed 9-50T Cassette
H3 Composite Base Pedal
H3 Aluminum Plus Pedal
H3 XCX Race Mountain Carbon Cranks
H3 LG1 Race Carbon Cranks – Gen4
H3 e*spec Race Carbon Cranks – Gen4
H3 e*spec Plus Cranks
H3 Helix Race 3-Bolt Direct Mount Chainring (SRAM® crank compatible)
H3 Helix Race 107 BCD Chainring
H3 Helix Race Direct Mount Chainring
H3 SL Guidering
H3 UL Chainring
H3 Helix Race e*spec Chainring
H3 e*spec Direct Mount Chainring
H3 Helix Race 12-Speed 13-52T Cassette
H3 Helix Race 12-Speed 9-52T Cassette
H3 Helix Race 12-Speed 9-50T Cassette
H3 TRS Plus 12 Speed 9-46T Cassette
H3 Helix Race 11-Speed 9-46T Cassette
H3 Race Carbon Handlebar
H3 Base Mountain Bike Handlebar
H3 Plus 35 Stem
H3 Covert I.C.R. Core Stem
H3 LG1 Plus Enduro Wheels
📝 The Narrative — clean text per page (homepage promise vs. sub-page reality)
HOMEPAGE (https://ethirteen.com) e*thirteen Mountain Bike Components: Engineered for Performance
RIDE SMOOTH, RIDE FAST [H2] NEW SIDEKICK FLUX WHEELS Two systems, engineered as one. Flux rims absorb the trail and hold your line. Sidekick hubs free your suspension and kill drag. Learn more [H2] Memorial Day Sale Shred into summer and save up to 70% off from May 22-31! [H2] Grappler Tires Tire lineups got complicated. We designed Grappler to solve that. [H1] e*thirteen MTB Components It's all about the ride. Whether you're hitting your first trail ride, racing local enduros, or chasing World Cup podiums, our passion is making your ride better. We engineer mountain bike parts & components that work when you need them, perform when you push them, and last beyond what you expect. Backed by comprehensive warranty and support to keep you riding, because it's all about the ride. [IMG: E*Thirteen] [H2] Sidekick The Sidekick Hub is a revolutionary rear mountain bike hub designed to enhance suspension performance by eliminating pedal kickback and filtering chain vibration. Explore Sidekick [IMG: E*Thirteen] [H2] Wheel Goods Upgrading your wheels and tires or converting to tubeless with our quick fill valves will dramatically improve the performance and dependability of your bike. Explore Wheels Goods [IMG: E*Thirteen] [H2] Drivetrain Our Drivetrain solutions are engineered to meet the demands of even the toughest conditions. The chainguides, cranks, chainrings, and cassettes are available for all riding styles: eMTB, MTB and Gravel. Explore Drivetrain [IMG: E*Thirteen] [H2] Rider Contact e*thirteen’s goal in developing Rider Contacts, whether it's our Handlebar, Stem, Seatpost or Pedals, is to engineer a seamless link between you and your bike. The better the connection, the better the ride. Explore Rider Contact [H2] express yourself. in color. Introducing the vibrant and captivating e*thirteen Color Line! Discover our distinctive color options, including Bronze, Eggplant, Naranja, Grey, Black, and Intergalactic, and give your bike a striking visual upgrade.` [IMG: Helix Race 3-Bolt Direct Mount Chainring (SRAM® crank compatible) e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 3-Bolt Direct Mount Chainring (SRAM® crank compatible) Regular price From $14.95 Sale price From $14.95 Regular price $72.95 Unit price / per Sale [IMG: Helix Race 12-Speed 9-50T Cassette e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 12-Speed 9-50T Cassette Regular price $189.99 Sale price $189.99 Regular price $329.95 Unit price / per Sale [IMG: Composite Base Pedal e*thirteen] [IMG: e*thirteen] Sale [H3] Composite Base Pedal Regular price From $15.99 Sale price From $15.99 Regular price $49.95 Unit price / per Sale [IMG: Quick Fill Presta Tubeless Valves e*thirteen] [IMG: e*thirteen] Sale [H3] Quick Fill Presta Tubeless Valves Regular price From $14.99 Sale price From $14.99 Regular price $25.95 Unit price / per Sale [IMG: Helix Race Direct Mount Chainring e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race Direct Mount Chainring Regular price From $58.36 Sale price From $58.36 Regular price $72.95 Unit price / per Sale [IMG: Plus 35 Stem e*thirteen] [IMG: e*thirteen] Sale [H3] Plus 35 Stem Regular price From $35.99 Sale price From $35.99 Regular price $99.95 Unit price / per Sale [IMG: Race Carbon Handlebar e*thirteen] [IMG: e*thirteen] Sale [H3] Race Carbon Handlebar Regular price From $99.99 Sale price From $99.99 Regular price $154.95 Unit price / per Sale [IMG: Helix Race e*spec Alloy Cranks e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race e*spec Alloy Cranks Regular price From $139.97 Sale price From $139.97 Regular price $199.95 Unit price / per Sale [IMG: Helix Race 12-Speed 9-45T Cassette e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 12-Speed 9-45T Cassette Regular price $223.97 Sale price $223.97 Regular price $319.95 Unit price / per Sale [IMG: Aluminum Plus Pedal e*thirteen] [IMG: e*thirteen] Sale [H3] Aluminum Plus Pedal Regular price From $54.99 Sale price From $54.99 Regular price $129.95 Unit price / per Sale [IMG: Quick Fill Schrader Tubeless Valves e*thirteen] [IMG: e*thirteen] Sale [H3] Quick Fill Schrader Tubeless Valves Regular price From $19.46 Sale price From $19.46 Regular price $25.95 Unit price / per Sale [IMG: Helix Race Alloy Cranks e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race Alloy Cranks Regular price From $174.99 Sale price From $174.99 Regular price $269.95 Unit price / per Sale 1 / of 12 View all [IMG: E*Thirteen] "e*thirteen has been a big part of my success since the beginning of my career. They’ve always provided me with top notch products that are performance focused and reliable." Aaron Gwin, Five-Time DH World Cup Overall Champion [IMG: E*Thirteen] "Regarding the Helix R Cassette. I have to say you hit it out of the park!! This cassette install was simple and only required one turn on the adjuster cable to dial in. It's as smooth as my Sram X01 12 Speed. Which is saying a lot!" Brian N. [IMG: E*Thirteen] "Wanted to let you know how super happy we are with the LG1 Race Carbon Rims! We're here in Snowshoe and can't tell you how many brands broke today." Commencal 100%, World Cup Pro DH Racing Team
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SUB-PAGE (https://ethirteen.com/collections/wheels/) Award-Winning Wheels for MTB, E-MTB, and Gravel Adventures
[H1] Wheels Wheels for MTB, E-MTB, and gravel. Sidekick hubs eliminate pedal kickback for improved suspension feel. Grappler Flux rims absorb impacts with engineered compliance. Grappler Sidekick Flux for Enduro and DH. Sylvan Sidekick for trail and all-mountain. Grappler Race e*spec for full-power E-MTB. Piedmont and XCX for gravel. Carbon and alloy options with a lifetime warranty on carbon wheels. Learn more [IMG: Grappler Sidekick Flux Carbon Enduro Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Carbon Enduro Wheels (2025) Regular price $714.00 Sale price $714.00 Regular price $1,020.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Carbon Enduro Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sold out [H3] Grappler Sidekick Flux Carbon Enduro Wheels - Front (2025) Regular price $559.97 Sale price $559.97 Regular price $799.95 Unit price / per Sold out [IMG: Grappler Sidekick Flux Aluminum Enduro Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Aluminum Enduro Wheels (2025) Regular price From $329.00 Sale price From $329.00 Regular price $470.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Enduro Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Aluminum Enduro Wheels - Front (2025) Regular price $265.97 Sale price $265.97 Regular price $379.95 Unit price / per Sale [IMG: Grappler Sidekick Flux Carbon Downhill Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Carbon Downhill Wheels (2025) Regular price $819.00 Sale price $819.00 Regular price $1,170.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Carbon Downhill Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Carbon Downhill Wheels - Front (2025) Regular price $594.97 Sale price $594.97 Regular price $849.95 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Downhill Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Aluminum Downhill Wheels (2025) Regular price $329.00 Sale price $329.00 Regular price $470.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Downhill Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sold out [H3] Grappler Sidekick Flux Aluminum Downhill Wheels - Front (2025) Regular price $265.97 Sale price $265.97 Regular price $379.95 Unit price / per Sold out [IMG: Sylvan Sidekick Race Carbon All Mountain Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Carbon All Mountain Wheels (2025) Regular price $658.00 Sale price $658.00 Regular price $940.00 Unit price / per Sale [IMG: Sylvan Sidekick Race Carbon All Mountain Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Carbon All Mountain Wheels - Front (2025) Regular price $545.97 Sale price $545.97 Regular price $779.95 Unit price / per Sale [IMG: Sylvan Sidekick Race Aluminum All Mountain Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Aluminum All Mountain Wheels (2025) Regular price From $315.00 Sale price From $315.00 Regular price $450.00 Unit price / per Sale [IMG: Sylvan Sidekick Race Aluminum All Mountain Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Aluminum All Mountain Wheels - Front (2025) Regular price $265.97 Sale price $265.97 Regular price $379.95 Unit price / per Sale [IMG: WH5SAA_108110_7.jpg e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Race Alloy e*spec All Mountain Wheels Regular price From $149.93 Sale price From $149.93 Regular price $419.95 Unit price / per Sale [IMG: Piedmont Race Carbon Gravel Wheels e*thirteen] [IMG: e*thirteen] [H3] Piedmont Race Carbon Gravel Wheels Regular price From $749.95 Sale price From $749.95 Regular price Unit price / per [IMG: Piedmont Race Alloy Gravel Wheels e*thirteen] [IMG: e*thirteen] [H3] Piedmont Race Alloy Gravel Wheels Regular price From $339.95 Sale price From $339.95 Regular price Unit price / per [IMG: Grappler Sidekick Flux Aluminum GR Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Flux Aluminum GR Front MTB Wheel Regular price $239.95 Sale price $239.95 Regular price Unit price / per [IMG: Grappler Sidekick Flux Aluminum GR Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Flux Aluminum GR Rear MTB Wheel Regular price $359.95 Sale price $359.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR DH Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR DH Front MTB Wheel Regular price $339.95 Sale price $339.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR DH Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR DH Rear MTB Wheel Regular price From $449.95 Sale price From $449.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR Enduro Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR Enduro Front MTB Wheel Regular price $329.95 Sale price $329.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR Enduro Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR Enduro Rear MTB Wheel Regular price $469.95 Sale price $469.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR DH Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR DH Front MTB Wheel Regular price $829.95 Sale price $829.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR DH Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR DH Rear MTB Wheel Regular price From $1,169.95 Sale price From $1,169.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR Enduro Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR Enduro Front MTB Wheel Regular price $749.95 Sale price $749.95 Regular price Unit price / per [H2] More about e*thirteen Wheels Your suspension can only do so much. Sidekick hubs pick up where it leaves off. BikeRadar found that "with the Sidekick hub in place, the back end of the bike feels suppler, as if you've switched to a higher-volume shock and increased the amount of travel on tap." Testpilot concluded: "You will use a wheel set which will make you safer, faster and more relaxed on the bike." Sidekick's proprietary freehub mechanism decouples the drivetrain from the rear wheel when coasting. An adjustable deadband (12°/15°/18°) filters kickback and chain vibration before it reaches the pedals. The result: improved suspension performance, reduced fatigue, better traction. Near-silent operation. Exceptionally low drag. MTB Wheels Grappler Sidekick Flux for Enduro and Downhill. Low-profile carbon or alloy rims engineered for vertical compliance without sacrificing lateral stiffness. BikeRadar called them "as forgiving as a good set of alloy hoops, but with a little more zip." Sylvan Sidekick for trail and all-mountain. Asymmetric rim design equalizes spoke tension between drive and non-drive sides. Lightweight 28-spoke builds for a lively, dynamic feel. E-MTB Wheels Grappler Sidekick Flux Enduro are E-MTB compatible and our recommendation for most E-MTB riding. Sylvan Sidekick Race wheels are a great option for lightweight E-MTBs used for lighter trail riding. Grappler Race e*spec wheels are purpose-built for full-power E-MTB. Oversized hub shell, large 6808 bearings, steel axle, and 32-spoke builds handle higher torque and heavier bike weight. Up to 228% stronger than earlier e*spec Plus models. 6° engagement balances quick response with pedal kickback reduction. Gravel Wheels Piedmont Race brings MTB durability to drop-bar adventures. 26mm inner width (carbon) or 24mm (alloy) for wider tire compatibility. Race Straightpull hubs with 4-pawl, 3° engagement for efficiency. Tool-free hub service when you're miles from anywhere. XCX Race for lightweight gravel performance. 24mm inner width. Carbon rims engineered to maintain a tubeless seal even if cracked. Lifetime free replacement warranty on all carbon rims. 5-year warranty on alloy.
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SUB-PAGE (https://ethirteen.com/collections/mountain-bike-wheels/) Award-Winning MTB Wheels Engineered from Hub to Rim
[H1] MTB Wheels Mountain bike wheels engineered from hub to rim. Sidekick wheels eliminate pedal kickback, drag, and noise for smoother suspension and free speed. Flux rims deliver World Cup-proven strength with compliant ride feel. Sylvan rims bring asymmetric design for a light, dynamic ride. MTB wheels for Downhill, Enduro, All Mountain, and Trail. Carbon or aluminum. E-MTB options available. Learn more [IMG: Grappler Sidekick Flux Carbon Enduro Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Carbon Enduro Wheels (2025) Regular price $714.00 Sale price $714.00 Regular price $1,020.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Carbon Enduro Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sold out [H3] Grappler Sidekick Flux Carbon Enduro Wheels - Front (2025) Regular price $559.97 Sale price $559.97 Regular price $799.95 Unit price / per Sold out [IMG: Grappler Sidekick Flux Carbon Downhill Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Carbon Downhill Wheels (2025) Regular price $819.00 Sale price $819.00 Regular price $1,170.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Carbon Downhill Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Carbon Downhill Wheels - Front (2025) Regular price $594.97 Sale price $594.97 Regular price $849.95 Unit price / per Sale [IMG: Sylvan Sidekick Race Carbon All Mountain Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Carbon All Mountain Wheels (2025) Regular price $658.00 Sale price $658.00 Regular price $940.00 Unit price / per Sale [IMG: Sylvan Sidekick Race Carbon All Mountain Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Carbon All Mountain Wheels - Front (2025) Regular price $545.97 Sale price $545.97 Regular price $779.95 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Enduro Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Aluminum Enduro Wheels (2025) Regular price From $329.00 Sale price From $329.00 Regular price $470.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Enduro Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Aluminum Enduro Wheels - Front (2025) Regular price $265.97 Sale price $265.97 Regular price $379.95 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Downhill Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Grappler Sidekick Flux Aluminum Downhill Wheels (2025) Regular price $329.00 Sale price $329.00 Regular price $470.00 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum Downhill Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sold out [H3] Grappler Sidekick Flux Aluminum Downhill Wheels - Front (2025) Regular price $265.97 Sale price $265.97 Regular price $379.95 Unit price / per Sold out [IMG: Sylvan Sidekick Race Aluminum All Mountain Wheels (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Aluminum All Mountain Wheels (2025) Regular price From $315.00 Sale price From $315.00 Regular price $450.00 Unit price / per Sale [IMG: Sylvan Sidekick Race Aluminum All Mountain Wheels - Front (2025) e*thirteen] [IMG: e*thirteen] Sale [H3] Sylvan Sidekick Race Aluminum All Mountain Wheels - Front (2025) Regular price $265.97 Sale price $265.97 Regular price $379.95 Unit price / per Sale [IMG: Grappler Sidekick Flux Aluminum GR Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Flux Aluminum GR Front MTB Wheel Regular price $239.95 Sale price $239.95 Regular price Unit price / per [IMG: Grappler Sidekick Flux Aluminum GR Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Flux Aluminum GR Rear MTB Wheel Regular price $359.95 Sale price $359.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR DH Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR DH Front MTB Wheel Regular price $339.95 Sale price $339.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR DH Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR DH Rear MTB Wheel Regular price From $449.95 Sale price From $449.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR Enduro Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR Enduro Front MTB Wheel Regular price $329.95 Sale price $329.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Aluminum GR Enduro Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Aluminum GR Enduro Rear MTB Wheel Regular price $469.95 Sale price $469.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR DH Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR DH Front MTB Wheel Regular price $829.95 Sale price $829.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR DH Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR DH Rear MTB Wheel Regular price From $1,169.95 Sale price From $1,169.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR Enduro Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR Enduro Front MTB Wheel Regular price $749.95 Sale price $749.95 Regular price Unit price / per [IMG: Grappler Sidekick Pro Flux Carbon GR Enduro Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Grappler Sidekick Pro Flux Carbon GR Enduro Rear MTB Wheel Regular price $1,049.95 Sale price $1,049.95 Regular price Unit price / per [IMG: Optimus Sidekick Pro Flux Carbon Trail Front MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Optimus Sidekick Pro Flux Carbon Trail Front MTB Wheel Regular price $749.95 Sale price $749.95 Regular price Unit price / per [IMG: Optimus Sidekick Pro Flux Carbon Trail Rear MTB Wheel e*thirteen] [IMG: e*thirteen] [H3] Optimus Sidekick Pro Flux Carbon Trail Rear MTB Wheel Regular price $899.95 Sale price $899.95 Regular price Unit price / per [H2] More about e*thirteen MTB Wheels Finding the right MTB wheels means matching your hubs, rims, and build to your terrain and riding style. Our mountain bike wheels give you options from revolutionary Sidekick technology to race-proven performance builds. Sidekick wheels combine anti-kickback hub technology with compliant Flux or Sylvan rims. The Sidekick hub eliminates pedal kickback, filters drivetrain vibration, and coasts with near-zero drag and whisper-quiet operation. An adjustable deadband lets you tune engagement between 12°, 15°, and 18° to suit your riding. Sidekick won Pinkbike's 2024 Innovation of the Year and the Design Innovation Award. Aaron Gwin says Sidekick makes his bike feel like racing without a chain: "Super quiet, no pedal kickback, super smooth." Paired with low-profile Grappler Flux rims for Enduro and Downhill, or asymmetric Sylvan rims for All Mountain, Sidekick wheels deliver a ride feel that puts wooden-feeling hoops to shame. Race wheels deliver World Cup-proven durability without Sidekick technology. Grappler Race for gravity disciplines, Sylvan Race for all mountain, Optimus Race for trail. Carbon or aluminum rim options across the line. E-MTB riders get purpose-built e*spec versions that can handle the demands of motor-assisted riding. Every mountain bike wheel is hand-built with quality spokes and locking nipples, tubeless-ready, and fully serviceable. Carbon wheels backed by a lifetime rim replacement warranty.
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SUB-PAGE (https://ethirteen.com/collections/discount-bike-parts/) Discount Deals on MTB, E-MTB, and Gravel Components
[H1] Discount Bike Parts Premium parts at prices that make upgrading easy. Wheels, drivetrain components, and accessories from our MTB, E-MTB, and gravel lines marked down to move. Outgoing models, last season's colors, and overstock. Same World Cup-tested quality. Same warranty. Limited quantities. Learn more [IMG: Helix Plus 12-Speed 9-50T Cassette e*thirteen] [IMG: e*thirteen] Sold out [H3] Helix Plus 12-Speed 9-50T Cassette Regular price $124.95 Sale price $124.95 Regular price $229.95 Unit price / per Sold out [IMG: Composite Base Pedal e*thirteen] [IMG: e*thirteen] Sale [H3] Composite Base Pedal Regular price From $15.99 Sale price From $15.99 Regular price $49.95 Unit price / per Sale [IMG: Aluminum Plus Pedal e*thirteen] [IMG: e*thirteen] Sale [H3] Aluminum Plus Pedal Regular price From $54.99 Sale price From $54.99 Regular price $129.95 Unit price / per Sale [IMG: XCX Race Mountain Carbon Cranks e*thirteen] [IMG: e*thirteen] Sale [H3] XCX Race Mountain Carbon Cranks Regular price From $99.93 Sale price From $99.93 Regular price $439.95 Unit price / per Sale [IMG: LG1 Race Carbon Cranks - Gen4 e*thirteen] [IMG: e*thirteen] Sold out [H3] LG1 Race Carbon Cranks - Gen4 Regular price From $99.93 Sale price From $99.93 Regular price $439.95 Unit price / per Sold out [IMG: e*spec Race Carbon Cranks - Gen4 e*thirteen] [IMG: e*thirteen] Sale [H3] e*spec Race Carbon Cranks - Gen4 Regular price From $129.93 Sale price From $129.93 Regular price $389.95 Unit price / per Sale [IMG: e*spec Plus Cranks e*thirteen] [IMG: e*thirteen] Sale [H3] e*spec Plus Cranks Regular price $29.93 Sale price $29.93 Regular price $78.95 Unit price / per Sale [IMG: Helix Race 3-Bolt Direct Mount Chainring (SRAM® crank compatible) e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 3-Bolt Direct Mount Chainring (SRAM® crank compatible) Regular price From $14.95 Sale price From $14.95 Regular price $72.95 Unit price / per Sale [IMG: Helix Race 107 BCD Chainring e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 107 BCD Chainring Regular price From $29.93 Sale price From $29.93 Regular price $79.95 Unit price / per Sale [IMG: Helix Race Direct Mount Chainring e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race Direct Mount Chainring Regular price From $58.36 Sale price From $58.36 Regular price $72.95 Unit price / per Sale [IMG: SL Guidering e*thirteen] [IMG: e*thirteen] Sale [H3] SL Guidering Regular price $39.99 Sale price $39.99 Regular price $62.95 Unit price / per Sale [IMG: UL Chainring e*thirteen] [IMG: e*thirteen] Sale [H3] UL Chainring Regular price From $44.99 Sale price From $44.99 Regular price $69.95 Unit price / per Sale [IMG: Helix Race e*spec Chainring e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race e*spec Chainring Regular price From $39.99 Sale price From $39.99 Regular price $84.95 Unit price / per Sale [IMG: e*spec Direct Mount Chainring e*thirteen] [IMG: e*thirteen] Sale [H3] e*spec Direct Mount Chainring Regular price From $17.93 Sale price From $17.93 Regular price $31.95 Unit price / per Sale [IMG: Helix Race 12-Speed 13-52T Cassette e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 12-Speed 13-52T Cassette Regular price From $189.99 Sale price From $189.99 Regular price $345.95 Unit price / per Sale [IMG: Helix Race 12-Speed 9-52T Cassette e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 12-Speed 9-52T Cassette Regular price From $230.97 Sale price From $230.97 Regular price $311.36 Unit price / per Sale [IMG: Helix Race 12-Speed 9-50T Cassette e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 12-Speed 9-50T Cassette Regular price $189.99 Sale price $189.99 Regular price $329.95 Unit price / per Sale [IMG: TRS Plus 12 Speed 9-46T Cassette e*thirteen] [IMG: e*thirteen] Sold out [H3] TRS Plus 12 Speed 9-46T Cassette Regular price $99.99 Sale price $99.99 Regular price $269.95 Unit price / per Sold out [IMG: Helix Race 11-Speed 9-46T Cassette e*thirteen] [IMG: e*thirteen] Sale [H3] Helix Race 11-Speed 9-46T Cassette Regular price $189.99 Sale price $189.99 Regular price $329.95 Unit price / per Sale [IMG: Race Carbon Handlebar e*thirteen] [IMG: e*thirteen] Sale [H3] Race Carbon Handlebar Regular price From $99.99 Sale price From $99.99 Regular price $154.95 Unit price / per Sale [IMG: Base Mountain Bike Handlebar e*thirteen] [IMG: e*thirteen] Sale [H3] Base Mountain Bike Handlebar Regular price From $17.99 Sale price From $17.99 Regular price $39.95 Unit price / per Sale [IMG: Plus 35 Stem e*thirteen] [IMG: e*thirteen] Sale [H3] Plus 35 Stem Regular price From $35.99 Sale price From $35.99 Regular price $99.95 Unit price / per Sale [IMG: Covert I.C.R. Core Stem e*thirteen] [IMG: e*thirteen] Sale [H3] Covert I.C.R. Core Stem Regular price $32.99 Sale price $32.99 Regular price $109.95 Unit price / per Sale [IMG: LG1 Plus Enduro Wheels e*thirteen] [IMG: e*thirteen] Sale [H3] LG1 Plus Enduro Wheels Regular price $149.93 Sale price $149.93 Regular price $375.00 Unit price / per Sale [H2] More about e*thirteen Discount Bike Parts Looking for an e*thirteen discount code or e*thirteen coupon code? You don't need one. These MTB parts are already on sale at rock bottom prices, no code required. This is where outgoing models, last season's colors, and overstock go to find new homes. Discount bike parts with the same World Cup-proven engineering. Same warranty. Just better prices because we need to make room. Wheels, cassettes, cranks, chainrings, chainguides, bottom brackets, pedals, and more on clearance. MTB, E-MTB, and gravel components for less. Nothing wrong with any of it. Just deals that won't last forever. When stock runs out, these sale prices go with it. If you've been waiting to upgrade your bike components for less, you've come to the right place
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Analysis Disclosure & Source Attribution
This page presents a snapshot of public data from e*thirteen, captured on May 30, 2026, to show how machine logic reads Semantic Coherence signals into an AI reputation evaluation.
Purpose: This data is presented under “Fair Use” for the purpose of independent signal analysis, allowing readers to see the raw signals behind the reputation score.
Notice to e*thirteen: This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results are intended as professional feedback to help improve any website’s machine-readability and authority signals. The evaluation is free, and any company can request a fresh audit at any time.
Any company can use the insights for free and improve its voice. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://ethirteen.com to view the most current version of its content and see directly what this company is about and what it offers.