e*thirteen Grappler Sidekick Flux Wheelset — One Set Only

MX wheelset (29” front / 27.5” rear), Boost spacing, XD driver.

The e*thirteen Grappler Sidekick Flux Wheelset delivers World-Cup-level performance with anti-kickback Sidekick hubs and ultra-compliant Grappler Flux rims for unmatched comfort, control, and speed. Only one set available.

A Revolution in MTB Wheels

This is e*thirteen’s most advanced wheel system ever—combining the suspension-transforming Sidekick anti-kickback hubs with the ultra-compliant Grappler Flux rims. The result? A wheelset that’s smoother, faster, and significantly more controlled than traditional stiff, wooden-feeling hoops.

Proven over two full World Cup seasons, the Grappler Sidekick Flux system has delivered consistent top-level results under the fastest riders in the world. Whether you’re chasing enduro podiums or shredding big mountain descents, this wheelset elevates every part of the ride.

Why These Wheels Are a Game-Changer

✔ Improved Suspension Performance

Sidekick anti-kickback hub technology—with adjustable deadband—eliminates pedal kickback and filters drivetrain shock before it ever reaches the rider. Your suspension works better, feels smoother, and stays active under load.

✔ Free Speed & Whisper-Quiet Operation

Exceptionally low mechanical drag lets the wheels carry speed effortlessly. The freehub is nearly silent, letting you hear your tires and trail—not your hub.

✔ Enhanced Comfort, Traction & Control

Low-profile Grappler Flux aluminum rims deliver true engineered compliance. Expect more traction, more tracking, and more comfort without reducing steering precision.

✔ Lively, Responsive Ride Feel

A low rim height combined with a 28-spoke double-butted build creates a wheel that’s dynamic, playful, and beautifully reactive.

✔ Race-Level Build Quality

Handbuilt with Sapim D-Light spokes and locking alloy nipples, ensuring maximum performance, consistency, and long-term durability.

✔ World Cup Proven Reliability

Fully serviceable, fully rebuildable, and rider-tested at the highest level—these wheels are built to be pushed hard.