TBolt USA is open and filling orders quicker than ever!
Email: contact@tboltusa.comText 704-826-5887Request a Callback

TBParts - Roller Rocker Race Head V2 108cc Big Bore Kit
XR70 & CRF70

Vital Information
Price$724.99
Part No TBW9109-XR70-CRF70
Location219D
Stock Level Out of Stock!
Want an email when we get this back in?
Get on the List
1


TB Roller Rocker Race Head V2 (52mm) Big bore & Stroker Crank kit 108cc 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
  • 51mm Stroker Crank



Recommended:

  • 26mm Intake port - TBW0433
  • 2 Size clutch tool - WHS-2274
  • High volume oil pump - TBW0226-12V OR TBW0225-6V (for 1981 or before)
  • TBparts oil cooler for V2 heads - TBW9187



Application:

  • XR70 - All years
  • CRF70 - All years



Kit Includes:

  • TBW0750 - V2 Race head
  • TBW0821 - V2 Head bolt kit
  • TBW0752 - Camshaft V2
  • TBW0754 - Head cover set
  • TBW0753 - Piston 52mm
  • TBW0859 - Gasket Set 54mm
  • TBW0156 - Cylinder
  • TBW0287 - Gasket
  • TBW0334 - Gasket
  • TBW0319 - Stroker crank



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.


 
Write Review

Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.