MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - YAMAHA - 13T 26-4137-13CRMO Lightweight Racing Valve Spring Kit In the upper part

In the upper part

Programmable user output for functions such as shift light

Extreme Duty Construction Translates Into An Extra Sidewall Ply Along With Increased Sidewall and Treat Rubber Thickness For Even Better Puncture Protection

Designed to Replace the Stock Plastic

INCREASED THICKNESS TO Ø28

MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - YAMAHA - 13T 26-4137-13CRMO Lightweight Racing Valve Spring Kit In the upper partMachined from high tensile strength, impact and wear resistant chromoly steel to minimize deformation, Inner splines are broached to provide maximum spline to countershaft contact to distribute driveline forces over the largest possible surface area, Heat treated, then finished with a nickel coating for corrosion resistance and lubricity, Each sprocket is quality checked by Computer Measurement Machine (CMM) to exactly match OEM design specifications