Nothing else needs purchased, this is everything to complete you entire rebuild. There is direct bolt on equipment, no machining required, no other mods required. This is everything you need to put a motor together right in your own garage with no special tools or special machining equipment. This is all the parts you need for your KX250F. These are all matched components from the same company (Hot Rods, Cylinder Works, Vertex and Winderosa) designed to work together. No guess work needed. These parts where all made to work together reliably and problem free.

You will receive:

 

 

Brand new Cylinder Works cylinder: Size Std (77mm bore)

Vertex 13.2:1 Piston (77mm), complete ring set, piston pin, retaining rings, gasket kit included