RENTHAL ULTRALIGHT ALUMINUM REAR SPROCKETS - 428 PITCH - 121U-428-**GP** - YZ85 02-25 / RM85 02-25

Renthal UltraLight Rear Chainwheels are CNC machined in Manchester, UK 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.

With Renthal's 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 aluminum rear sprockets can be found on the rear wheels of more factory race team machines than all other competing brands combined.

Note-Image for reference only. Actual item may vary based on fitment.

Fits the following models:

Yamaha YZ80 '89-01, YZ85 '02-25, / Suzuki RM80 '85-01, RM85 '02-25

Questions on fitment? Visit Renthal's chainwheel selector listed below.

Renthal Chainwheel Selector