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TB Parts

88cc V2 Race Head & Mikuni VM26 Bore Kit Honda - CRF50 XR50 CRF70 XR70 - TBW9115

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  • $ 754.99



We've stood behind these products 100% since we opened in 2005. Best reviews received for a big bore kit hands down!


TB Roller Rocker Race Head V2 (52mm) Big bore kit.



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.


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.
Mikuni VM26 Carb kit

Replacement Parts:
TBW0750 - V2 Race head
TBW0755 - V2 Head bolt kit
TBW0752 - Camshaft V2
TBW0754 - V2 Head cover set
TBW0753 - Piston
TBW0859 - Gasket Set
TBW0156 - Cylinder
TBW0301 - Cable
TBW0433 - Intake Kit
TBW0399 - Carburetor
TBW0413 - Air filter