• Maximum strength sprockets at minimum weight; front sprockets made with C45 steel and SCM415 chromoly steel alloy -- rear sprockets made with C45 high-carbon steel
• Each sprocket is heat treated and sandblasted to lower material surface tension
• Meet or exceed the highest-quality compound standards set by the motorcycle industry

NOTE:

At this time we are not able to specify on our website the standard tooth sizes of the sprockets or size and length of chain for your motorcycle. We will display every sprocket that fits. If you need the standard tooth size information or chain size and length, call us toll-free 800-969-7504

NOTE:

Anytime you use other than the standard front/rear sprocket sizes, clearance must be checked. When converting to a smaller chain size, especially for racing, be sure to use the highest-grade O-ring chain available (heavy-duty non-O-ring acceptable for drag racing).

NOTE:

• For Kawasaki KDX420 1981, standard front sprocket size is 16 teeth
• For Kawasaki KDX250 1981, standard front sprocket size is 14 teeth.
• This will also fit Husqvarna 2-strokes w/6 splines

(1) 13 Tooth front steel sprocket for 520 chain

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