Ratech Solid Pinion Spacer and Shim Pack - GM 10 Bolt 8.5" Water Neck Gasket 6" radius U- bends

6" radius U- bends

2011-2016 GMC Sierra 3500 HD

The EAR166017 features a 5

Dual 450 (1750 hp) @ 60 psi at 13

Ratech Solid Pinion Spacer and Shim Pack - GM 10 Bolt 8.5" Water Neck Gasket 6" radius U- bendsReusable spacers replace the stock crush sleeve and eliminate pinion bearing failure. Ratech wants all racers to know about The Myth that "All Shim Packs in the market are the same. They're just washer shaped steel that come in different thickness." WRONG! Ratech manufacture all of their shims in house on their own machinery. Ratech uses the absolute finest American made Hardened Shim Stock available. Ratech uses only hardened shim stock not sheet