COMP Cams 10 Degree Valve Spring Retainer - 1.065 in / 0.700 in OD Steps - 1.437-1.500 in Dual Spring - Set of 16 13-RS1-B-4XS The methanol kits are compatible

The methanol kits are compatible with the methanol calculations provided by Computech's Weather Stations

Vehicle Applications: 2010-2015 Chevrolet Camaro

2003-2007 Sterling Truck Acterra

All of UB's uppers come black powder coated to resist corrosion

COMP Cams 10 Degree Valve Spring Retainer - 1.065 in / 0.700 in OD Steps - 1.437-1.500 in Dual Spring - Set of 16 13-RS1-B-4XS The methanol kits are compatibleCNC machined for consistency, these 7 degree lightweight tool steel retainers feature light weight, exceptional strength and wear characteristics. Fit engines with 1. 437" 1. 500" O. D. valve springs. Retainers, Lite wt Tool Stl 1. 437" 10degThe COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what