Renthal Grooved Front Sprocket - 520 Chain Pitch x 12 Teeth - 257--520-12GP 2015 Polaris Sportsman 850 HO Increase horsepower and torque with

Increase horsepower and torque with a deeper

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Renthal Grooved Front Sprocket - 520 Chain Pitch x 12 Teeth - 257--520-12GP 2015 Polaris Sportsman 850 HO Increase horsepower and torque withRenthal Grooved Front Sprocket Renthal off road front chainwheels are chosen by more factory motocross and supercross teams than any other chainwheel on the market today. They are CNC machined from a cased hardened and core refined 655M13 nickel chromium steel. Machined self cleaning mud grooves at each tooth to help increase wear resistance Renthal front chain wheels are simply the finest front chain wheel on the market today. Our Front chain wheels