Allstar Performance GM 8.5" Ring and Pinion Gear Set - Ratio: 3.73 R03J015 4L60E / 4L65E

4L60E / 4L65E

and 72cc combustion chambers

Set-up plates are used for squaring and stringing chassis to ensure accurate chassis set-up by eliminating wheel and tire differences

Helmet support can be secured and removed in seconds with a new wider Velcro closure

Twist Lock

Allstar Performance GM 8.5" Ring and Pinion Gear Set - Ratio: 3.73 R03J015 4L60E / 4L65EQuality differential components are suitable for race, street, and off road use. Lapped in matched sets for quiet operation. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical items available from Allstar Performance.