The APR Valve Spring System is a high performance, lightweight upgrade designed to increase valve control and eradicate valve float common on many applications. APR's design specifications called for a valve spring, retainer and spring seat combination that doesn't overpower and snap the OEM valves or erode the aluminum spring seat, while still maintaining exceptional valve control. The result is an advanced design that's 28% lighter yet 20% stiffer than the high performance OEM EA113.K04 (MK6 R) setup and is proven to eliminate the OEM valve train's weakest link. We call it Performance Without Compromise!

Features:
The APR Valve Spring System is a high performance, lightweight upgrade designed to increase valve control and eradicate valve float common on many applications. APR's design specifications called for a valve spring, retainer and spring seat combination that doesn't overpower and snap the OEM valves or erode the aluminum spring seat, while still maintaining exceptional valve control. The result is an advanced design that's 28% lighter yet 20% stiffer than the high performance OEM EA113.K04 (MK6 R) setup and is proven to eliminate the OEM valve train's weakest link. We call it Performance Without Compromise!

More From This Category

MANLEY Valve, Titanium, All Pro 1.625 in. Stem Dia, .3110 in. Stem Dia, Each

MANLEY Valve, Titanium, All Pro 1.625 in. Stem Dia, .3110 in. Stem Dia, Each

$307.70

MANLEY Piston, 1.645 in. Compression Distance, 4.560 in. Bore Size, Inverted Dome, For Chevrolet BB, Set of 8

MANLEY Piston, 1.645 in. Compression Distance, 4.560 in. Bore Size, Inverted Dome, For Chevrolet BB, Set of 8

$1,837.14

MANLEY Valve, Race Master, Exhaust, 33.5 mm Head Dia, 7 mm Stem Dia, 99 mm Length, For Toyota 1FZ-FE, Each

MANLEY Valve, Race Master, Exhaust, 33.5 mm Head Dia, 7 mm Stem Dia, 99 mm Length, For Toyota 1FZ-FE, Each

$68.72

COMP Cams Lifter, Short Travel XD, Short Travel Retro-Fit, For Chevrolet Small Block, Set of 16

COMP Cams Lifter, Short Travel XD, Short Travel Retro-Fit, For Chevrolet Small Block, Set of 16

$1,960.79

CVF Racing Pulley Kit, V-Belt, Short Water Pump, Stealth Black For Chevrolet Small Block, Kit

CVF Racing Pulley Kit, V-Belt, Short Water Pump, Stealth Black For Chevrolet Small Block, Kit

$365.38

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 256/268, Lift .487/.493, 351C, 351M-400M, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 256/268, Lift .487/.493, 351C, 351M-400M, Kit

$869.04