Top End

S&S heads give great performance, and work with additional upgradesKits are fully assembled, and include stainless steel valves and high-lift springs (up to .640 lift)Intake manifold, pistons and gasket kits are sold separately; gasket kits contain head...

Include a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders (3-7/16" for 74" engines or 3-1/2" for 80"), forged 8:1 compression pistons complete with rings and wrist pins, manifold clamps, manifold seals, all required...

Include a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders (3-7/16" for 74" engines or 3-1/2" for 80"), forged 8:1 compression pistons complete with rings and wrist pins, manifold clamps, manifold seals, all required...

CNC-machined dowels used for locating cylinder headMade in the U.S.A.

CNC-machined dowels used for locating cylinder headMade in the U.S.A. Harley-Davidson -- 1200 Custom EFI XLC -- (2016, 2015, 2009, 2007, 2013, 2010, 2012, 2014, 2008, 2011, 2017, 2003, 2019, 2004, 2006, 2005, 2002, 2018); Harley-Davidson -- Forty-Eight...

Exhaust Valve Bellow - Polaris 817838 Polaris -- Indy XCR 440 -- (1998, 1999); Polaris -- XCR 800 -- (2000, 2002, 2001, 1999); Polaris -- Indy 600 Classic Touring -- (2001); Polaris -- Indy XCR 440 Edge SP -- (1999); Polaris -- Indy XC 500 SP -- (2000,...

Exhaust Valve Bellow - Polaris 817837 Polaris -- RMK 600 H.O. w/155" Track -- (2007); Polaris -- RMK 600 H.O. w/144" Track -- (2007); Polaris -- RMK 700 w/151" Track -- (2005, 2006); Polaris -- Indy XC 800 SP (M-10) -- (2005); Polaris -- Edge Touring 600...

All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistanceMade in the U.S.A. Yamaha -- YFM 350 X Warrior -- (2002, 1999, 2001, 2003, 2004, 2000,...

All valve seals are made of 100% solid Viton® for long lifeMeet or exceed OEM specificationsWhen using Kibblewhite spring kits, Kibblewhite valve seals must be used because of spring clearancesMade in the U.S.A.

For use with intake and exhaust valve guidesRetain their ability to seal in adverse conditionsPTFE seals feature a metal jacket with choker springMade in the U.S.A. Harley-Davidson -- 1200 Custom XLC -- (2003, 2002, 1996, 1999, 1997, 1998, 2000, 2001);...

Viton intake/exhaust sealsMade in the U.S.A. KTM -- 250 SX-F -- (2013, 2015, 2014); KTM -- 250 XC-F -- (2014, 2015, 2013)

Viton intake/exhaust sealsMade in the U.S.A. Yamaha -- YZ 450 FX -- (2016, 2017, 2018); Yamaha -- YZ 450 F -- (2016, 2014, 2010, 2011, 2013, 2017, 2012, 2015)