Richmond Ring and Pinion Set - 4.11 Ford 9" Pro Gear 35 Spline SC05501 * #4275 and #4277 are

* #4275 and #4277 are designed to clear most roller rockers on factory cast iron and Edelbrock cylinder heads

4-stage retards

Chevy Corvette 1997-2013

0W-40 under 18406 and 10W-60 under 18606

200 RPM Increment Changes

Richmond Ring and Pinion Set - 4.11 Ford 9" Pro Gear 35 Spline SC05501 * #4275 and #4277 areProduct Description: Ring and Pinion Pro Gear 4. 11 Ratio 35 Spline Pinion Ford 9 in 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. Racecars around the world rely on Richmond premium gearsets and Transmissions; your hotrod will run better than new with