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Trail Bikes 108cc Big Bore Kit + Roller Rocker V2 Race Head + Stroker Crank + VM 26 Carb Kit - Z50 / XR50 / CRF50 / XR70 / CRF70

TB V2 Race Head, 108cc Big Bore kit
Z50 / XR50 / CRF50 / XR70 / CRF70 12 Volt Engines
Pricing: $879.95


Trail Bikes V2 Race Head, 108cc Big Bore kit, Stroker Crank + Mikuni 26mm carb kit

Obviously you're looking for the kind of kit that has pretty much everything to make your bike get up and go on your buddies bikes.
The V2 Race Head is that kit, when you're done your mild 50cc motor is like new and transformed to a 108cc ripper!!

      -Z50 199-1999
      -XR50 / CRF50 All Years
      -XR70 / CRF70 All Years
      -Various 12 Volt Engines

      -New V2 Roller Rocker Race Head
      -28.5mm intake Valve
      -23.5mm Exhaust Valve
      -5mm Valve Stem
      -26mm Intake Port - Matches Intake Manifold Kit TBW0433
      -23mm Exhaust port
      -High Performance Race Camshaft (For V2 Head)
      -51mm Crankshaft with NTN bearings
      -Lightweight aluminum cylinder with steel sleeve
      -Cast in mounts on cylinder for aftermarket skid plates
      -Oversized cooling fins on cylinder for efficient heat dissipation
      -High compression 52mm piston with rings, pin and clips
      -52mm Top End Gasket Set
      -Genuine Mikuni VM26mm Performance Carb (VM26-606 Series)
      -Intake Kit
      -Jet kit with 3 different sizes (Stock size is a #195 - Extra jets sizes of 155, 165 & 175)
      -Throttle Cable
      -Dual Layered Foam Air Filter
      -All pistons in the V2 kits are new with CNC machined piston domes
      -Head kit includes all hardware
      -Head kit Includes all covers

Please Note:
It will save a lot of time if the oil pump is installed while installing the big bore kit (requires cylinder removal) and your splitting the cases now is THAT moment in your life you MUST purchase an oil pump!!
Make sure to order a high output oil pump TB part # FF0226TB or Takegawa part # TKG1160053.

If you have any questions please call one of our knowledgeable and friendly techs at 833-327-8507


  • K9118TB
  • K9118TB
  • Trail Bikes
  • New


Shipping Information

  • Item Requires Shipping
  • 12.0 lbs.

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