TBParts - 178cc Big Bore Kit, Race Head V2, and Intake Manifold Kit Z125

This is the largest bore kit available from TBParts. WIth a 67mm piston and V2 race head, this will transform your Z125 into a powerhouse!

NOTE:

• TBW0473 cam is stronger through the low and mid range with a little less on the very top.
• TBW0577 cam is a little stronger on the very top with less through the low and mid range.

Key features:

• Lightweight high compression 67mm piston
• Aluminum cylinder for better heat dissipation and further weight reduction from stock.
• V2 roller rocker race head provides much larger valves and aggressive cam with roller rocker arms.

Application:

• Kawasaki Z125
  

Note: 
Case boring required
MUST BE USED WITH AN AFTERMARKET FUEL CONTROLLER TO PREVENT A LEAN CONDITION AND DAMAGE TO YOUR ENGINE
WE RECOMMEND PREMIUM FUEL

Available Options:

Cam Choice:
Race Camshaft V2-1 TBW0473 s25 TypeRace Camshaft V2-2 TBW0577 s35 Type