TBParts - Roller Rocker Race Head V2 88cc Big Bore Kit
XR70 & CRF70 w/ Mikuni VM24 Carb

TB Roller Rocker Race Head V2 (52mm) Big bore kit. Highest performance race head on the market with full parts support in stock.

Key Features:

• Roller Rocker Arms exactly like the V2 head for the KLX110
• 28.5mm intake Valve
• 23.5mm Exhaust Valve
• 5mm Valve Stem
• 23mm Exhaust port
• Matching High Compression Piston
• Head kits include all hardware
• 52mm piston with rings, pin, & clips.
• 52mm Aluminum Cylinder
• High performance race camshaft (for the Race Head only)
• Head gasket kit

Recommended:

• High volume oil pump - TBW0226 (available in this section).
• 26mm Intake manifold - Matches Intake Manifold Kit TBW0433 (available in this section)
• Sta-bil fuel stabilizer - W-57-1129
  

Kit Includes:

• TBW0750 - V2 bare head
• TBW0821 - Head bolt kit
• TBW0752 - V2 Camshaft
• TBW1441 - Head cover set
• TBW0753 - Piston
• TBW0859 - Gasket Set
• TBW0156 - Cylinder
• TBW0301 - Cable
• TBW0433 - Intake Kit
• TBW0483 - Carburetor
• TBW0413 - Filter Air



Application:

• XR/CRF 70 - All years

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).

See the Performance Info section for additional information on our performance parts.