JMS TractionMax Computer Module - Various GM Car / Crossover Applications 2005-20 M77MS909HC1 Chevy kits include undercut short

Chevy kits include undercut short studs to effectively eliminate head gasket failure

Large Chrome Trim Ring

and opening the X2

PMAX Black (Racing Line) 1/2 groove

Sold as pair (left and right)

JMS TractionMax Computer Module - Various GM Car / Crossover Applications 2005-20 M77MS909HC1 Chevy kits include undercut shortTractionMAX Designed for BIG Horsepower, Traction Limited Vehicles Optimize Acceleration and Traction Dual Adjustment Dials Included Factory and Aftermarket Tuning Compatible Product Description: Computer Module TractionMax Various GM Car Crossover Applications 2005 20 JMS CHIP & PERFORMANCE WE MAKE FAST CARS FASTER! JMS is a manufacturer of high quality automotive electronic components. We develop and design reliable products that will improve the