Zipp Rear Hub ZR1 SL Centerlock 24H 12x142 Sram XDR

Zipp's ZR1 SL is a race-ready, lightweight hub set designed for high performance and durability. The SL version is modeled after its predecessor, the ZR1 hub, and features a lighter hub shell and bearing system. This hub set has been specifically developed for our top-tier NSW wheels and is now available separately. The ZR1 SL comes with carbon steel bearings, with an upgrade option for ceramic bearings to reduce weight. The hub design creates a quick engagement feel with 66 engagement points. The six pawls are staggered to operate in two groups of three, ensuring that three pawls engage at all times. This means that the power from your legs is quickly transferred to your wheels. The freehub design keeps the pawls in place during disassembly for easier maintenance. Zipp hubs use J-Bend spokes, which are the most common type of spokes today. J-Bend spokes are widely available and easier to replace. ZR1 hubs are approved for use with road or gravel e-bikes with light assistance, provided the motor torque does not exceed 60 Nm.