High performance valve spring kit including retainers. 84lb@ 37mm, 157lb @ 10mm
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High performance valve spring kit including retainers. 84lb@ 37mm, 157lb @ 10mm
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Pair Your High Performance Valves with a Set of Upgraded Springs and Retainers!
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Upgrade Your Factory Intake and Exhaust Valves
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Inconel-Nimonic / Sodium Filled, Std 28mm, set of 12.
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High performance valve spring kit including steel retainers. 75lb @ 37mm, 155lb @ 10mm
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Single Groove sodium filled exhaust valves for high performance builds
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Inconel-Nimonic / Sodium Filled, oversize 28.50mm (+0.5mm), set of 12.
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Single Groove sodium filled exhaust valve set for high performance builds
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Stainless Steel 21-4N, Oversize 31.9mm (+0.5mm)
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Stainless Steel 21-4N, Standard Size 31.40mm - Set of 12
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Inconel-Nimonic / Sodium Filled, Std 28mm
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This product was last offered at the strikethrough price on
05-02-2026
Two required per valve, necessary for use with certain supertech valves
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High performance valve springs. 84lb@ 37mm, 157lb @ 10mm
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High performance valve springs. 75lb @ 37mm, 155lb @ 10mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Replacement exhaust valve
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This product was last offered at the strikethrough price on
12-08-2025
Quality retainers from Supertech
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