Reduces crank compression for easier starts, then restores full compression for normal running. Fits 95", 96", 103" and 110" engines with 10.5:1–11.5:1 compression; requires high-lift springs and adjustable pushrods. Not for models with OEM compression releases.
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Replacement ring set for S&S pistons. Includes rings for two pistons. Made in the USA.
Quality camshaft kit for 1954–1984 Big Twin models; higher lift and improved valve timing. Quiet hydraulic operation when used with hydraulic conversion kits.
Replacement rings for S&S pistons. Includes rings for two pistons. Made in the U.S.A.
Complete replacement set includes top and second compression rings plus three-piece oil control rings; restores sealing and oil control for two pistons.
Bolt-in cam kit for 2200–5200 RPM performance; boosts horsepower past 100. Compatible with compression ratios up to 11.0:1. Includes bearings, o-rings, and hardware. No tuning required.
Complete set of top, second, and three-piece oil control rings for two pistons. Barrel face top rings and Napier second rings provide improved sealing and heat transfer; three-piece Flex Vent oil rings ensure positive oil control. Made in the USA.
Bolt-in camshaft for 103” engines. More power between 2,500–5,500 rpm. Works with stock and ported heads. Made in the USA. Professional installation required; check clearances and use proper tools.
Bolt-in camshaft kit for 103" engines; strong midrange power (3,000–6,000 rpm). Requires high-lift valve springs and clearance checks.
Complete replacement ring set for two pistons with PVD coating and three-piece oil control rings.
Complete replacement piston ring set with PVD coating: barrel face top rings, Napier second rings, and three‑piece flex vent oil control rings. Includes enough rings for two pistons.
Complete replacement set with top, second, and three-piece oil control rings; PVD coating on top rings; includes rings for two pistons.
 
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