Outside Distributing 10-0314-12 Drive Sprocket - 428-12T (17mm)

Sprocket Position: Front
Sprocket Size: 428
Sprocket Teeth: 12

Tooth Count: 12.
Works with Chain #: 428.
Bolt Hole Spacing (BHS): N/A, No Bolt Holes.
Key/Spline Groves: 6 (17mm/14mm).
Mounting Plate: Part # N/A.
428 12-Tooth 17mm Engine Sprocket for 50cc-250cc ATV, Dirt Bike & Go Kart.
The item fits for 50cc-125cc Horizontal Engine and CG/CB 125cc-250cc Vertical Engine.
The inside diameter:17mm

Many units are sold with low quality sprockets that wear quickly. We have the solution! Replace your sprocket with our high quality sprockets before your old sprocket causes damage to your unit!. Performance Tip: By reducing the tooth count on your front drive sprocket you can increase take off Holeshot performance of your unit; However, the top speed will be reduced. If its top speed you are looking for you can simply increase the tooth count of the drive sprocket but you will loose some of your initial take off power.