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Kit contains crankshaft, main bearing/seals and complete gasket set for complete installationFor Models:2003 - 2014 Yamaha YZ 250

Ready-to-install, direct bolt-on cylinders require no re-plating and lookvirtually identical to the OEM cylindersThree kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big BoreCylinder kits include matched Vertex pistons to...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Performance Clutch Kits take the clutch pack kits one step further by including a Wiseco forged clutch basket and new rubber cushionsWiseco forged baskets are tougher and stronger than stock, and achieve higher fatigue properties than any other clutch on...

Includes crankshaft, main bearings, complete bottom end gasket set, including all seals and gaskets needed for the jobThe crank pin bearings are manufactured from the highest quality hot rolled steel. Case hardened to 58-62CThe caged needle roller...

Hot Rods Bottom End kits include everything needed to complete crankshaft installation:Hot Rods main bearings and seals kit (Main seals included when applicable)Complete engine gasket set includes all gaskets and seals for complete engine rebuild (Does...

Hot Rods Bottom End kits include everything needed to complete crankshaft installation:Hot Rods main bearings and seals kit (Main seals included when applicable)Complete engine gasket set includes all gaskets and seals for complete engine rebuild (Does...

Complete engine rebuild Crankshaft assembly OEM quality main bearings All engine gaskets, seals, and o-rings Wiseco ProLite 2-stroke piston and top end bearing Wiseco standard series 4-stroke piston Cam chain included (if needed) Wiseco hour meter and...

All new assembly sold complete with Hot Rods connecting rodFactory assembled and trued to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performanceReady for installationCrankshaft is completely rebuildable with genuine Hot Rods...

 (+3mm Big Bore Kit) makes 269cc. 13.0:1 comp. Uses Vertex #23535 When using Hot Rods #4183 makes 277cc. Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets)

 (+3mm Big Bore Kit) 269cc. Std compression. Uses Vertex #23405. Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets)

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersThree kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big BoreCylinder kits include matched Vertex pistons to...