SET YOUR CAR

Cosworth Ultra-High RPM Dual Valve Spring/Retainer Set

$1,040.00

MODEL # COS1 KK3839
Manufacturer Part # KK3839
4-5
weeks
Ships within 4-5 weeks
Qualifies for free shipping!

We specialize in engineering engine components optimized for high performance engines with the highest quality and attention to detail possible. Our ultra racing valve spring kits are designed to maintain precise valve control, even in the most extreme conditions. By manufacturing our springs with chamfered ends from the highest quality chrome silicone steel and putting them through a two step heat treatment and stress relief process, we ensure precision and dependability.

Included with this kit are valve springs, lightweight titanium retainers and hardened steel spring seats.

Replacement Components

COS1 PR7561, Valve Spring Retainer 

COS1 PR7563, Valve retainer

Spring Pressure

Pressure at installed height: 356 N

Pressure at 13.9mm Lift: 1019 N


SPECIFICATIONS

Head Alteration Required: No
Inner Valve Spring: Yes
Location: Intake and Exhaust
Machining Required: No
Retainers: Titanium
Mfgr. Warranty: No Warranty
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