88cc V2 Race Head Big Bore Kit - CRF50 XR50 CRF70 XR70 Z50 - TBW9105

NEW! Roller Rocker V2 Race Head Performance Kit:
TB Parts 88cc (52mm) V2 Race Head Big Bore Kit.

This kit converts a stock 50 and 70 to 88cc.

Features:

- 52mm high compression piston with rings, pin, & clips
- Head gasket kit and clutch cover gasket.
- High performance race camshaft (for the V2 Race Head only)

- Has Roller Rocker Arms exactly like the V2 head for the KLX110
- 28.5mm intake Valve
- 23.5mm Exhaust Valve
- 5mm Valve Stem
- 26mm Intake Port (Matches Intake Manifold Kit TBW0433)
- 23mm Exhaust port
- All pistons in the kits are new and have CNC machined piston domes
- Head kits include all hardware
- Head kits Include all covers (Billet Dress up kits and Breathers will be available later)

- Includes all necessary parts and comes assembled! The exhaust valve has been upgraded to stainless steel (21-4N material)

Installation Note:

It will save a lot of time and effort if the oil pump is installed while installing the bore kit (requires cylinder removal).
INSTALL TIP - CLICK HERE

Replacement Parts: