Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The COMP Cams Stage 1 Thumpr hydraulic roller cam for Gen IV LS 4.8L/5.3L/6.0L truck engines brings a 222/233 lobe profile that delivers a strong idle lope and improved midrange power. The NSR (no-springs-required) version uses popular Thumpr lobe designs and supports AFM and VVT delete applications. It’s targeted at truck owners seeking a noticeably more aggressive cam character without complex valvetrain changes.
COMP Cams Stage 1 Thumpr Cam for Gen IV LS 4.8L/5.3L/6.0L Truck
