PBI rear sprockets are manufactured from aircraft quality 7075-T6 Aluminum which surpasses common steel sprockets in tensile, yield and shear strength. They are harder than steel and far lighter to save on unsprung weight. Most models are provided with lightening holes and are made from full thickness aluminum for maximum strength. Available in a full range of tooth sizes for ratio versatility.

CNC machined from solid high grade alloy steel and broached specially for maximum spline to shaft contact providing optimum load bearing. Heat treated and plated for long life and extended wear resistance.

PBI Countershaft (Front) Sprockets  

Manufactured from a steel alloy, approaching 200,000 PSI yield with a unique resistance to impact, load and wear.

Our Yamaha supply of sprockets is extensive, ranging from 50cc to 1200 cc models. We are working on listing everyone, but at this time , please Email Gary using the Mailbox below and I will look for your need. It's that good, we have a large selection of teeth choices for all models. State model, cc engine size, and number of teeth desired. If you are just replacing the stock sprockets, state stock.