Renthal 121U-428-49GPBU REN Rear Sprockets fuel-air-jets-pilot-jets 2011-2017 Polaris 800 RMK Assault

2011-2017 Polaris 800 RMK Assault 155

Special alloy steel construction

Start current: 200A

2001 Ski-Doo MX Z 800

2017-2019 Arctic Cat M 6000 SE ES 153

Renthal 121U-428-49GPBU REN Rear Sprockets fuel-air-jets-pilot-jets 2011-2017 Polaris 800 RMK AssaultRenthal 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