Top End

Billet aluminum constructionDramatically increased combustion efficiencyRadical combustion chamber design provides more horsepower with less chance of detonationFor low altitude operation with stock or modified engines Polaris -- SwitchBack 800 Pro-S 1...

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 -- YFM 700 Grizzly AT FI 4x4 -- (2007, 2010, 2008, 2011, 2014, 2009,...

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. KTM -- 350 SX-F -- (2011, 2012);...

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. Husqvarna -- FE 350 -- (2017,...

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. KTM -- 250 XC-F -- (2014, 2013,...

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. KTM -- 250 SX-F -- (2006, 2012,...

Complete bolt-on Big Bore kit for ultimate strength, durability and powerIncludes purpose-built, state-of-the-art, high-performance forged piston kit with rings, tool steel wrist pins and locksComes with complete gasket kitMade in the U.S.A. Polaris --...

• Replacement piston kits for M-Spec big bore cylinder • 4-stroke pistons are made using a double-bridged forging design • Lightweight pistons with the tightest piston-wall clearances in the industry give you a quieter running engine • Made in the USA -...

Kits contain all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side modelsCylinder Head Service Kits include the below components:Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Je Pistons Piston Kit 153766 Honda -- CBR1100XX Blackbird -- (1999, 1998, 2001, 2000, 1997, 2002, 2003)

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersNickel Silicon Carbide plated for long lifeMade in the U.S.A. Kawasaki -- KVF 750 Brute Force 4x4i -- (2008, 2014, 2013, 2010, 2011, 2006,...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersNickel Silicon Carbide plated for long lifeMade in the U.S.A. Kawasaki -- KVF 750 Brute Force 4x4i -- (2006, 2007, 2013, 2005, 2012, 2009,...