Renthal 441U-428-47GPSI REN Rear Sprockets bicycle-e-power-accessories (mid tension) for added mid-range

(mid tension) for added mid-range to top-end power and HT (high tension) for pro-level high-rpm power

2005-2006 Yamaha YZ250F

When you're as obsessed as we are about the quality of race products

1996 Honda XR400R

Renthal 441U-428-47GPSI REN Rear Sprockets bicycle-e-power-accessories (mid tension) for added mid-rangeRenthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer. A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal's light weight all