COMP Cams proudly introduces the Thumpr series hydraulic roller cam and lifter kits. These camshafts are a series of hydraulic roller camshafts designed for use in engines that were originally equipped with flat tappet camshafts. The lobe profile and grind characteristics of these Thumpr camshafts use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. They're designed to maximize the rough-idling characteristics of the cams, giving you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. They are available in three different grind profiles. Each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range. Thumpr series cam and lifter kits feature a cutting-edge hydraulic roller design that delivers a substantial power increase over an identical hydraulic flat tappet grind without sacrificing reliability or ease of maintenance.

More From This Category

COMP Cams Cam / Lifters / Valvetrain Blower and Turbo Solid Flat Advertised Duration 290 / 304 L

COMP Cams Cam / Lifters / Valvetrain Blower and Turbo Solid Flat Advertised Duration 290 / 304 L

$1,456.02

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat, Advertised Duration 294/306, Lift .588/.593, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat, Advertised Duration 294/306, Lift .588/.593, For Chevrolet Big Block 396-454, Each

$628.99

Crow Cams Camshaft, Holden VN Series 1 V6 Flanged Custom

Crow Cams Camshaft, Holden VN Series 1 V6 Flanged Custom

$813.99

COMP Cams Cam/Lifters/Timing, Magnum, Hydraulic Roller, Advertised Duration 280/280, Lift .525/.525, For Chevrolet Small Block, Kit

COMP Cams Cam/Lifters/Timing, Magnum, Hydraulic Roller, Advertised Duration 280/280, Lift .525/.525, For Chevrolet Small Block, Kit

$1,809.21

COMP Cams Cam/Lifters/Timing, Magnum, Solid Flat, Advertised Duration 282/282, Lift .495/.495, For Chrysler 383-440, Kit

COMP Cams Cam/Lifters/Timing, Magnum, Solid Flat, Advertised Duration 282/282, Lift .495/.495, For Chrysler 383-440, Kit

$1,050.56