Comp Cams Thumpr Hydraulic Flat Tappet Cam and Lifter Kits BMW E93 M3

Comp Cams Thumpr Hydraulic Flat Tappet Cam and Lifter Kits BMW E93 M3Thumpr camshafts use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize the rough idling characteristics of the cams. This gives you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Specification: Lifter Type: Hydraulic Flat Tappet RPM Range: 2,500 6,400 Valve Lift (in.): 0. 531 Intake 0. 515 Exhaust

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