Protaper 038361 PTR Front Sprocket security-covers This bearing is machined from

This bearing is machined from 6061 billet aluminum and is then Type III hard anodized to make sure it withstands the rigors of what the part goes through when in the car

and are also adjustable and include all necessary hardware for mounting

2009-2018 Yamaha YFZ450R SE

1981 Yamaha XS1100

Protaper 038361 PTR Front Sprocket security-covers This bearing is machined fromRace Spec (RS) Front Sprockets are CNC machined and internally broached to precise tolerances from case hardened, core refined chromoly steel. Computer engineering ensures precise fitment, optimal weight savings and perfect balance. The result is minimal chain drag, maximum horsepower, and uncompromising strength. A proprietary coating further reduces wear and corrosion, yielding a front sprocket unparalleled in the market