The Sidekick rear hub features a unique anti-kickback drive mechanism with adjustable deadband providing smooth suspension performance reduced fatigue and near-silent operation for an unparalleled riding experience. Its groundbreaking freehub mechanism disengages the drivetrain from the rear wheel when coasting and an adjustable deadband filters kickback and chain vibration before it reaches the pedals virtually eliminating pedal feedback effects on suspension. With the drive mechanism disengaged from the ratchet ring drag is significantly reduced. The result is an impeccably smooth ride over the roughest terrain improved traction heightened speed and control and reduced fatigue. Its nearly silent operation immerses you in the outdoor experience letting you hear nothing but the wind in your ears and your tires on the trail. Designed to enhance the suspension performance of any full-suspension mountain bike Adjustable pawl-pusher allows tool-free tuning of deadband between 12Adeg 15Adeg and 18Adeg to suit rider preference bike type and terrain Chain tension filtered by the deadband ensures suspension is unhindered by resistance from pedal kick-back resulting in improved more consistent performance and simpler setup Durable 60T ratchet ring with innovative pusher driven pawl system provides silent operation and reduced drag by remaining disengaged unless pedaling Reduced kickback chainslap and vibration mean a quieter more comfortable ride Ultimate reliability: Proven on the World Cup and fully serviceable and rebuildable so you can push your limits with confidence Highly CNC weight-optimized aluminum construction J-Bend spoke interface E-Bike compatible table{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;font-weight:350;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;}.desc ul{font-size:24px;font-weight:600;margin-left:-25px;padding-top:35px;border-top:3px solid #f0f0f0;}.desc li{list-style:none;border-bottom:4px solid #eb212e;width:142px;} TECH SPECS Freehub Body Type SRAM XD Bearing Type Cartridge Bearings Weight 452g Designed for ebike Yes Spoke Interface J-Bend Hole Count 32 Rotor Mount 6-Bolt Disc Spacing 12 X 148mm