TB V2 RACE KIT (120-125CC)



SKU: TBW9127 Category:


TB Roller Rocker Race Head V2 146cc Big Bore Kit
China 120 & 125cc engines
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
  • 57mm piston with rings, pin, & clips
  • 57mm all aluminum cylinder with steel liner
  • High performance race camshaft (for the Race Head only)
  • Head gasket kit


  • Sta-bil fuel stabilizer - W-57-1109
  • 26mm Intake - TBW0433

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

OD of cylinder skirt is 59mm


  • China 120cc & 125cc engines with a 14mm wrist pin

Kit Includes:

  • TBW0751 - V2 Race head
  • TBW0821 - V2 Head bolt kit
  • TBW0752 - Cam
  • TBW0754 - V2 Head cover set
  • TBW0414 - Cam sprocket
  • TBW0824 - Piston
  • TBW0862 - Top end gasket set
  • TBW0601 - Cylinder

Additional information

Weight 6 kg


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