UWR SEALED ROADRACING CHAIN
RK 520UWR ROADRACING CHAIN
UWR is a roadracing specific chain designed to absorb the extreme engine torque impact and transfer it into superior high speed performance. UWR Sealed Roadracing chains are lighter than 520GXW. The unique UW seals reduces the most friction amongst all sealed rings on the market. UWR is used by Moto2 teams including Yamaha Tech3. These professional grade chains are now available to consumers.
When compared to 520GXW, the 520UWR chain is 7% lighter!