Richmond Ring & Pinion Set - GM 12 Bolt - 4.33 Ratio - 39-9 Teeth H766003S 289 and 302 Small BlockThe

289 and 302 Small BlockThe COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development

Proudly built in the U

Billet aluminum bracket can be used with cable or mechanical linkage

Featuring Our Rugged Diamond Plate Look And Formfit Design

at 43 PSI of base fuel pressure

Richmond Ring & Pinion Set - GM 12 Bolt - 4.33 Ratio - 39-9 Teeth H766003S 289 and 302 Small BlockTheRICHMOND is the leading manufacturer of professional quality, hi performance ring and pinion sets. For over 80 years, the Double Diamond has signified the highest quality gears in the racing industry! Richmond Gear is famed for their tough and reliable ring and pinion sets. That same level of reliability and precision is available in their other driveline products, including differentials, racing Transmissions, driveshaft components, and more.