Sidekick Wheels

The MTB wheel system that changes how your bike rides. Sidekick Flux pairs anti-kickback hubs with compliant rims, engineered as one. The hubs eliminate pedal kickback, run near-silent, and spin drag-free by decoupling the drivetrain when coasting. Tool-free service, Infinite Ride Warranty, and winner of both Pinkbike Innovation of the Year and the Design & Innovation Award. Learn more

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More about e*thirteen Sidekick Wheels

Pedal kickback degrades suspension performance even when you can't feel it. Chain tension from suspension movement pulls against the pedals, robbing traction and adding fatigue. Sidekick is the award-winning hub that fully disconnects the drivetrain while coasting, eliminating kickback at the source rather than just damping it. Pinkbike named it Innovation of the Year, calling it "the most elegant take on chain-force mitigation we've seen to date."

But Sidekick does more than eliminate kickback. Traditional hubs create drag and noise when coasting. Sidekick's pawls disengage completely, so the hub spins like a front wheel with zero resistance. You carry more speed through rough sections without losing momentum. And instead of the angry-bee ratchet of a conventional freehub, you hear your tires and the trail. Riders consistently call the silence one of their favorite features.

The Design & Innovation Award recognized Sidekick for delivering "noticeably more responsive suspension, fewer vibrations, and significantly reduced rider fatigue." BikeRadar found it made "a marked difference to suspension performance" with "seemingly more time to think about your lines and body position." MBR said it feels "like riding chainless" with the rear wheel tracking better under braking.

Adjustable deadband lets you tune engagement to your bike and riding style: 9°, 13°, or 18°. Tool-free service means anyone can rebuild the hub in minutes without specialized equipment.

Flux rims pair low-profile concave sections with high-modulus carbon or 6069 aluminum for radial compliance without sacrificing lateral stiffness. Testpilot tested the Grappler Flux combination and concluded, "You will be safer, faster, and more relaxed on the bike."

The Sidekick Flux range spans three families: Optimus for Trail, Sylvan for All Mountain, and Grappler for Enduro and DH. Each available in Pro Carbon, Pro Aluminum welded, or value-tier Aluminum sleeved. Boost or Super Boost configurations. 30mm inner width. All Class 1 E-MTB rated.

World Cup proven. Lifetime warranty on Carbon and Pro Aluminum rims. 10-year on hubs.