Supertech 37.5mm Titanium Retainer High Performance Dual Valve Spring Kit for Nissan SR20 VE P12 DOHC

The Supertech Valve Spring Kit for Nissan SR20 VE P12 DOHC engines is designed for racing reliability and optimal high-RPM performance. Key specs: Spring Type: Dual Valve Spring, Seat Pressure: 83 lbs at 37.50 mm, Open Pressure: 180 lbs at 10.00 mm, Spring Rate: 9.40 lbs/mm, Max Lift: 17.40 mm, and Safe RPM: 8000. Each kit includes a complete valvetrain assembly (springs, retainers, locators, and keepers), ensuring easy installation and eliminating clearance issues. Engineered to control valve movement at high RPMs, reduce float, and support high-performance camshafts. Compatible with most aftermarket and OEM cams within the rated lift range. Installation requires checking spring height with included shims and confirming retainer-to-seal clearance. Recommended for any engine with high-performance cams, increased RPM limit, or forced induction. Backed by Supertech's reputation for valve spring engineering and racing reliability. Specifications

Retainer Quantity

16

Seat Locator

Use OEM Seat

Seat Locator Quantity

16

Spring Kit
spr-2035-2022

Spring Quantity

16

Safe RPM Limit
8000

Retainer
Titanium

Rate
9.40 lbs/mm

Coil Bind
17.40 mm 19 mm

Outer Spring OD

30 mm

Inner Spring ID

21.80 mm

Outer Spring OD

20.50 mm

Inner Spring ID

15.50 mm

Seat Pressure

83 lbs at 37.50 mm

Open Pressure

180 lbs at 10.00 mm

Max Lift

17.40 mm

Engines

Nissan SR20 VE P12 DOHC

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