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Supertech Performance Dual Valve Spring NON-US VEHICLE SEE NOTES FOR FITMENT

Images May Not be Vehicle Specific. For Display Purposes Only.

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Part #: SPR-H1002-C20
Notes: Dual Valve Spring
Please contact us for pricing & more information.


Coil Bind 19.5mm
Inner Spring (OD/ID) 20.5mm / 15.5mm
Max Net Lift 14.5mm
Outer Spring (OD/ID) 29.05mm / 21.85mm
Pressure (Open) 177lbs@10mm
Pressure (Seat) 70lbs@34mm
Rate 10lbs/mm

This Item Also Available In

Part Number Price Notes & Specs
SPR-H1001D-C20 $0.00 Notes Dual Valve Spring
Coil Bind 20mm
Inner Spring (OD/ID) 20.5mm / 15.5mm
Max Net Lift 14mm
Outer Spring (OD/ID) 29.35mm / 21.85mm
Pressure (Open) 191lbs@10mm
Pressure (Seat) 80lbs@34mm
Rate 11lbs/mm
SPR-TS1012-C20 $0.00 Notes Dual Valve Spring
Coil Bind 19.6mm
Inner Spring (OD/ID) 20mm / 15.2mm
Max Net Lift 13.9mm
Outer Spring (OD/ID) 27.5mm / 20mm
Pressure (Open) 188lbs@10 mm
Pressure (Seat) 80lbs@33.50mm
Rate 11.8lbs/mm

All Fitments

Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
0 - 0 SEE NOTES FOR FITMENT ALL ALL ALL ALL ALL ALL For 88-96 Calibra/Vectra/ Astra C20XE / C20LET; Verify Cylinder Head Guide OD (Kolbensmidt 11mm / Coscast 12.8mm); Must Order Correct Spring Seat Locator

Product Description

Supertech Valve Springs are made with premium Superclean Chrome Silicon Vanadium Steel Alloy for higher performance and durability at high RPM ranges. The Supertech materials also provide for better memory, which translates into higher performance.

Computer designed to ensure that wire stress levels do not overpass their limits, Supertech Valve Springs are manufactured for long term durability even under the most extreme conditions.

Supertech Valve Springs are sold Per Valve Spring. For Example, when order for a Model that requires 16 Valve Springs, order ‘Quantity: 16’

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