Top End

Spring kit is designed with increased spring rates and high lift compatibility compared to the stock springsCompatible with boosted or turbocharged applicationsCNC-machined titanium retainers and Cr-Si dual springs provide valvetrain control at high rpms...

Je Pistons Piston Kit 144538 Honda -- CBR600F2 -- (1997, 1993, 1995, 1998, 1991, 1994, 1990, 1992, 1996); Honda -- CBR600F3 -- (1991, 1992, 1994, 1997, 1990, 1995, 1998, 1993, 1996)

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersNickel Silicon Carbide plated for long lifeBig bore cylinders do not require machine workMade in the U.S.A. Kawasaki -- KX 250 F -- (2016,...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersNickel Silicon Carbide plated for long lifeBig bore cylinders do not require machine workMade in the U.S.A. Kawasaki -- KX 250 F -- (2009)

Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylindersNickel silicon carbide-plated for long lifeMade in the U.S.A. Honda -- CRF450X -- (2012, 2017, 2010, 2016, 2005, 2011, 2013, 2008, 2009,...

Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylindersNickel silicon carbide-plated for long lifeMade in the U.S.A. Yamaha -- YZ 450 FX -- (2021, 2022, 2023); Yamaha -- YZ 450 F -- (2022, 2021,...

Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylindersNickel silicon carbide-plated for long lifeMade in the U.S.A. Honda -- CRF450R -- (2020, 2021, 2022, 2023, 2024, 2018, 2017, 2019); Honda...

An economical solution for stock rebuilds, and mild performance upgradesForged from 8620 steel for greater strength than stock or cast steelFeature the same .750" long rocker shaft bushings as S&S Roller Rockers: longer bushing provides 50% more load...

Wossner Piston Kit - 73.68 Mm - Polaris 600 Iq K7073Da-2 Polaris -- IQ 600 Racer -- (2008, 2015, 2009, 2011, 2014, 2013, 2016, 2010, 2012)

Wossner Piston Kit - 84.87 Mm - Arctic Cat 8000 K7076Da-2 Arctic Cat -- M8 Sno Pro EFI w/162" Track -- (2011, 2010); Arctic Cat -- M8 EFI w/162" Track -- (2010, 2011); Arctic Cat -- M 800 w/153" Track -- (2012, 2013); Arctic Cat -- M 800 Sno Pro Limited...

Wossner Piston Kit - 81.86 Mm - Ski Doo 800 P-Tec Engine Type K7081Da-2 Ski-Doo -- Summit X 800R P-TEK w/163" Track -- (2008, 2011, 2010, 2009); Ski-Doo -- Summit 800R Everest P-TEK w/154" Track -- (2008, 2009, 2011, 2010); Ski-Doo -- Summit 800R 50th...

Wossner Piston Kit - 84.86 Mm - Polaris 800 Cfi K7077Da-2 Polaris -- IQ 800 -- (2008, 2010, 2009); Polaris -- RMK 800 -- (2011, 2016, 2017, 2015, 2018, 2013, 2014, 2008, 2009, 2012, 2010); Polaris -- RMK 800 Dragon w/155" Track - (Late) -- (2008);...