You should have your existing cylinder honed (unless its new) prior to installing this kit.
It will save a lot of time and effort if the oil pump is installed while installing the bore kit
(requires cylinder removal).
Race Head Large valves (now 25/22mm) and better flow for increased performance.
Bigger cooling fins. Includes all necessary parts and comes assembled
52mm piston with rings, pin, & clips.
High performance race camshaft (for the Race Head only)
Head gasket kit.
Intake kit for the race head
TB oil cooler kit w/intake mount - TBW9073
Honda Z50 1988-1999
Honda XR50 All Years
Honda CRF50 All Years
TBW0365 - Piston Kit
TBW0206 - Gasket Kit
TBW0273 - Intake Manifold
TBW0300 - Race Cam
TBW0385 - Race Head & Valves Assembly