Reply To: TM Top End Interchangeability

[Joey Guyon]

Fyi guys I did a billet VHM piston and head kit on a K9B this winter and compares to the stock cast piston an increased piston to wall clearance is recommended. Be certain to have a kart shop or nikasil specialist measure your bore and likely open it up .0005″ or more. Also likely order the smallest VHM piston to save some hone time and extend the life of your jug.