Dirt Bike

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...

Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuildVertex piston kit (standard compression piston, rings, pin and clips)Hot Rods heavy duty crank (stock strokeincludes wrist pin bearing for two...

Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuildVertex piston kit (standard compression piston, rings, pin and clips)Hot Rods heavy duty crank (stock strokeincludes wrist pin bearing for two...

Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuildVertex piston kit (standard compression piston, rings, pin and clips)Hot Rods heavy duty crank (stock strokeincludes wrist pin bearing for two...

 Stage 1: single-cam motor. Excellent midrange and top-end power increase. Uses stock auto-decompression mechanism. Uses stock valve springs.

 (+2mm Big Bore Kit) makes 159cc. 11.7:1 compression. Uses Vertex #23520. When using Hot Rods 4175 makes 166cc Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets) 

 (+2.5mm Big Bore Kit) 474cc. Std compression. Uses Vertex #23521. When using Hot Rods #4176 makes 496cc. 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 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...

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...

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...