Pressure Calibration Kit (800HP+) GM 2011-2016 Allison 1000 and 2000 Series suspension For AT4 use part number

For AT4 use part number 27530 Requires cutting and drilling

2 Year Warranty

They feature the same legendary lighting technology and superior build quality as the rest of RIGIDs lighting products

7L tubes like others

giving you the aggressive stance and improved ground clearance you want

Pressure Calibration Kit (800HP+) GM 2011-2016 Allison 1000 and 2000 Series suspension For AT4 use part numberThis Kit is recommended for performance enhanced trucks. Designed to improve shift firmness with variable spring selections to achieve your desired results. The PPE Pressure Calibration Kit sets minimum pressure and boosted pressure levels (adjustable) that are a match for 800HP+ applications.