Stainless Steel 21-4N, Oversize 31.9mm (+0.5mm)
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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
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Two required per valve, necessary for use with certain supertech valves
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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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Quality retainers from Supertech
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(36 mm) (7 mm Stem)
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Replacement Exhaust valve from TRW
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Sold individually.
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MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
06-04-2026
Stainless Steel 21-4N, Standard Size 31.40mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
High performance valve springs. 75lb @ 37mm, 155lb @ 10mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This product was last offered at the strikethrough price on
05-02-2026