COMP Cams
COMP Cams 132-300-13 - NSR / NTR No Springs Required and works even with factory tune! This is the grind that should have come from the factory for the Duramax. Instant response & performance gains across the board.
COMP Cams 132-300-13 - NSR / NTR No Springs Required and works even with factory tune! This is the grind that should have come from the factory for the Duramax. Instant response & performance...