Dirt Bike Engine

Del West - 09262720 - Intake Valve - Yamaha YZ250F '14-'17FeaturesTitanium aluminide valves are designed to meet the most exacting requirementsSpecs

Del West - 09262721 - Exhaust Valve - No Dish - Yamaha YZ250F '14-'17FeaturesTitanium aluminide valves are designed to meet the most exacting requirementsSpecs

Cylinder Works - 09311021 - Cylinder Kit - Big Bore - 80.00 mm - YamahaFeaturesCylinders have a nickel silicon carbide cylinder sleeveLook virtually identical to OEM cylindersKit includes cylinder,...

Cylinder Works - 09311020 - Cylinder - 97.00 mm - YamahaFeaturesNickel silicon carbide-plated for long lifeMade in the U.S.A.Specs

Cylinder Works - 09311022 - Cylinder - 39.50 mm - Gas Gas | Husqvarna | KTMFeaturesNickel silicon carbide-plated for long lifeMade in the U.S.A.Specs

Cylinder Works - 09311019 - Cylinder Head Kit - Kawasaki | SuzukiFeaturesInclude cam caps and cam cap boltsInclude C630 (nickel/aluminum/bronze) valve seats and guidesCompetition valve jobShortened...

Cylinder Works - 09311018 - Cylinder Head Kit - KawasakiFeaturesInclude cam caps and cam cap boltsInclude C630 (nickel/aluminum/bronze) valve seats and guidesCompetition valve jobShortened valve...

Cylinder Works - 09311013 - Cylinder - 96.00 mm - HondaFeaturesNickel silicon carbide-plated for long lifeMade in the U.S.A.Replacement Part for OEM Number(s):12100MEY670Specs

Cylinder Works - 09311015 - Cylinder - 45.00 mm - Gas Gas | Husqvarna | KTMFeaturesNickel silicon carbide-plated for long lifeMade in the U.S.A.Specs

Cylinder Works - 09310849 - Cylinder Kit - Standard Bore - 97.00 mm - YamahaFeaturesCylinder kit includes matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel...

Cylinder Works - 09310848 - Cylinder - 97.00 mm - Standard - YamahaFeaturesNickel silicon carbide-plated for long lifeMade in the U.S.A.Specs

Cylinder Works - 09346344 - Gasket Kit - Big Bore - HondaFeaturesSpecsBore Size ImperialOversize (+3.00 mm)<

Cylinder Works - 09310850 - Cylinder Kit - High Compression - 97.00 mm - YamahaFeaturesCylinder kit comes with matched Vertex pistons to ensure longevity, performance and reduced engine noiseKit...

Cylinder Works - 09310847 - Cylinder Kit - Big Bore - 82.00 mm - HondaFeaturesCylinders have a nickel silicon carbide cylinder sleeveLook virtually identical to OEM cylindersKit includes cylinder,...

Cylinder Works - 09310839 - Cylinder Kit - Standard Bore - 96.00 mm - HondaFeaturesCylinder kit includes matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon...

Cylinder Works - 09310845 - Cylinder Kit - Standard Bore - 79.00 mm - HondaFeaturesCylinder kit includes matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon...

Cylinder Works - 09310846 - Cylinder Kit - High Compression - 79.00 mm - HondaFeaturesCylinder kit comes with matched Vertex pistons to ensure longevity, performance and reduced engine noiseKit...

Cylinder Works - 09310841 - Cylinder Kit - High Compression - 96.00 mm - HondaFeaturesCylinder kit comes with matched Vertex pistons to ensure longevity, performance and reduced engine noiseKit...

Cylinder Works - 09300205 - Cylinder Head - Standard Bore - YamahaFeaturesCompetition valve jobShortened valve guides to accept higher lift camsUnshrouded combustion chamberBlended bowl seat to...

Cylinder Works - 09311117 - Cylinder - 77.00 mm - YamahaFeaturesNickel silicon carbide-plated for long lifeMade in the U.S.A.Specs

Cylinder Works - 09311078 - Cylinder - 66.40 mm - YahamaFeaturesNickel Silicon Carbide plated for long lifeMade in the U.S.A.Big bore cylinders do not require machine work.Specs

Cylinder Works - 09311118 - Cylinder Kit - Standard Bore - 77.00 mm - YamahaFeaturesCylinder kit includes matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel...

Cylinder Works - 09347521 - Big Bore Gasket - 80.00 mm - YamahaFeaturesSpecsBore Size Metric80.00 mm

Cometic - 09347854 - Top End Gasket Kit - 91 mm - KTMFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring seal...

Cometic - 09347857 - Top End Gasket Kit - 90 mm - KTM/Husqvarna/Gas GasFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and...

Cometic - 09347836 - Top End Gasket Kit - 82 mm - SuzukiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347867 - Top End Gasket Kit - 48 mm - Kawasaki/SuzukiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better...

Cometic - 09347844 - Top End Gasket Kit - 96 mm - HondaFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347860 - Top End Gasket Kit - KawasakiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring seal...

Cylinder Works - 09311163 - Cylinder Kit - Big Bore - 72.00 mm - YamahaFeaturesCylinders have a nickel silicon carbide cylinder sleeveLook virtually identical to OEM cylindersKit includes cylinder,...

Cometic - 09347863 - Top End Gasket Kit - 97 mm - YamahaFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347866 - Top End Gasket Kit - 47 mm - Kawasaki/SuzukiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better...

Cometic - 09347861 - Top End Gasket Kit - 96 mm - KawasakiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347853 - Top End Gasket Kit - 90 mm - KTMFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring seal...

Cometic - 09347832 - Top End Gasket Kit - 77 mm - SuzukiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347847 - Top End Gasket Kit - 77 mm Stock - YamahaFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston...

Cometic - 09347846 - Top End Gasket Kit - 79 mm - HondaFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347804 - Top End Gasket Kit - KTM/Husqvarna/Gas GasFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston...

Cometic - 09347828 - Top End Gasket Kit - 99 mm - SuzukiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring...

Cometic - 09347840 - Top End Gasket Kit - 52.5 mm Stock - KawasakiFeaturesMLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better...