Richmond Ring and Pinion - 3.73 Ratio - 27 Spline Pinion - 3 Series - 7.5 in / 7.625 in - GM 10-Bolt IH100020 and that's why

and that's why

Our extensive R & D programs provide tehcnological gains

1996-2002 Ford E-250 Econoline

1962-1970 Pontiac Bonneville

Draco Spring has grown into the one of the largest custom spring manufacturers in the world

Richmond Ring and Pinion - 3.73 Ratio - 27 Spline Pinion - 3 Series - 7.5 in / 7.625 in - GM 10-Bolt IH100020 and that's whyRICHMOND 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.