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FeaturesRings are replacement for one piston Position Notes 1975YamahaGP 433--1976-1981YamahaEX440--1976-1977YamahaGP440--1976YamahaPR440--

FeaturesOriginal engine serial numbers are retainedMLS (Multi-Layered Steel) head gasketsRetains stock engine heightStock bolt pattern Position Notes 2017-2021Harley-DavidsonFLHTK Ultra Limited--2017-2021Harley-DavidsonFLHXSE CVO Street...

FeaturesOriginal engine serial numbers are retainedMLS (Multi-Layered Steel) head gasketsRetains stock engine heightStock bolt pattern Position Notes 2017-2023Harley-DavidsonFLHTCUTG Tri Glide Ultra--2017-2023Harley-DavidsonFLHTK Ultra...

FeaturesAluminum cylinder is nickel carbide coated designed with larger water jacketsSpecially designed, high performance, hard anodized power valves (cannot use OEM)There is an aluminum cylinder head with a removable bronze dome allowing for a higher...

FeaturesContact surfaces designed for improved sealingHigh-temperature Viton® and PTFE materialsImproved tolerance over OEM100% quality controlledKit includes one full set of intake and exhaust sealsMade in the USA

FeaturesRings are replacement for one piston Position Notes 1998-1999Ski-DooMX Z 500--1999-2000Ski-DooSkandic WT LC--1997-1998Ski-DooFormula Deluxe 500--1997-1999Ski-DooGrand Touring 700 SE--1994-1996Ski-DooMach Z 779--1999-2000Ski-DooFormula 580...

FeaturesRings are replacement for one piston Position Notes 1984-1988Ski-DooSafari 377--1980-1983Ski-DooCitation 4500--1982, 1984, 1985, 1986Ski-DooSkandic 377--1980-1983Ski-DooCitation 4500E--1984-1988Ski-DooSafari 377E--1992-1994Ski-DooSkandic...

FeaturesRings are replacement for one piston Position Notes 1994-1996YamahaVX500DX VMAX 500 DX--1994-1996YamahaVX500E VAMX 500 LE--1994YamahaVX500ST VMAX 500 ST--

FeaturesRings are replacement for one piston Position Notes 1996-2000Ski-DooTouring LE--1984-1986Ski-DooSafari 447--1990-1991Ski-DooSafari LXE--1989-1990Ski-DooNordik 50--1990-1991Ski-DooSafari LX--1984Ski-DooSafari 447E Grand...

FeaturesRings are replacement for one piston Position Notes 1989-1990Ski-DooNordik 50--1984-1986Ski-DooSafari 447--1990-1991Ski-DooSafari LXE--1997-2000Ski-DooTouring LE--1990-1991Ski-DooSafari LX--1984Ski-DooSafari 447E Grand...

FeaturesRings are replacement for one piston Position Notes 2000Arctic CatZL 550 ESR Limited--2000Arctic CatZL 550 ESR--2000-2001Arctic CatPantera 580 EFI--1997Arctic CatPowder Special 580 EFI--1995Arctic CatPantera 580--1995Arctic CatEXT 580 Mountain...

FeaturesRings are replacement for one piston Position Notes 2000-2003Arctic CatZL 550 ESR--1991Arctic CatEl Tigre EXT Special--1992Arctic CatEXT 550--2000-2001Arctic CatPanther 550--1992Arctic CatEXT 500 Special--1992Arctic CatEXT 550 Mountain...