A revolution in MTB wheels, combining the suspension and performance benefits of Sidekick anti-kickback hubs with the control and comfort of engineered compliance from Grappler Flux rims. Grappler Sidekick Flux Enduro and Downhill Wheels are a groundbreaking revolution in MTB wheels. Tested over two World Cup seasons by the world's fastest athletes, these wheels consistently deliver top results. Sidekick hubs feature an adjustable deadband that eliminates pedal kickback, enhancing suspension performance and filtering drivetrain shock and vibration before it reaches the rider. Low-profile Grappler Flux rims set new standards in compliance, strength, weight, and performance. Together, these technological marvels offer increased comfort, enhanced speed and control, and a lively ride feel that puts wooden-feeling hoops to shame. Efficient and predictable suspension performance, added traction and tracking, reduced rider fatigue, and nearly silent hub operation create a more confident and immersive ride experience for both pros and enthusiasts. Improved suspension performance: Sidekick anti-kickback hub technology with adjustable deadband eliminates kickback and filters drivetrain vibration, improving ride feel and suspension performance Free Speed: Sidekick has exceptionally low drag and whisper-quiet operation, carrying more speed than other freehub systems Enhanced comfort and control: ultra-compliant, low-profile Flux Carbon rims add radial compliance and traction without reducing steering precision and feel Lively Ride Feel: The low profile rim height combined with a double-butted 28-spoke build makes for a responsive and dynamic ride Ultimate reliability: Proven on the World Cup and fully serviceable and rebuildable, so you can push your limits and ride with confidence. Lifetime Rim Warranty: Free lifetime carbon rim replacement