Richmond Ring and Pinion Set - 4.10 Ratio 12 Bolt GM 721065 Sets include 16 matched rocker

Sets include 16 matched rocker arm nuts which are direct replacements for many stud girdles

Small Block Buick / Rover V8

ATI Ford 7

Fits all LS engines using LS2

1-Piece Rear Main

Richmond Ring and Pinion Set - 4.10 Ratio 12 Bolt GM 721065 Sets include 16 matched rockerProduct Description: Ring and Pinion Pro Gear 4. 11 Ratio 30 Spline Pinion 4 Series 8. 875 in GM 12 Bolt 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