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Vintage Honda 88cc Race Head big bore Kit
Z50 K1-78

Vital Information
Part No TBW0939-Z50K178
Stock Level 4 Left

Same great quality CRF50/XR50 88cc kits now for Vintage! This is the race head 88cc kit that everyone is talking about! Performance and price make Mike's Honda Trail Bike 88cc bore kit w/ race head a real winner!

Key Features:

  • Lightweight aluminum cylinder with steel sleeve - Cast in mounts on cylinder for aftermarket skid plates
  • Oversized cooling fins on cylinder for efficient heat dissipation
  • 52mm piston with rings, pin, & clips - Head gasket kit
  • High performance race camshaft - Race Head
  • Larger valves (25mm intake & 22mm exh) and porting for increased performance.
  • Also has bigger cooling fins. Includes all necessary parts. Comes disassembled.
  • 20mm Performance carb assembly.
  • Sta-bil fuel stabilizer - W-57-1109
  • High volume oil pump - TBW0225-6V
  • 2 Size clutch tool - WHS-2274
  • High speed 2mm drill bit - TRC-5526
  • TB oil cooler kit w/ intake mount - TBW1370
  • TB 12 way rotating spacer - TBW0900

Kit Includes:

  • TBW0219 - Piston
  • TBW0206 - Gasket
  • TBW0156 - Cylinder
  • TBW0125 - 20mm Carb
  • TBW0273 - Intake Kit
  • TBW0301 - Throttle Cable
  • TBW0174 - Air Filter
  • TBW0189 - Cam
  • TBW0385 - Race Head & Valves Assembly
  • TBW0294 - Jet Kit
  • TBW0251 - Right Side Cover
  • TBW0861 - 28T 2 Bolt Cam Sprocket and Dowel

 NOTE: Throttle cable is for CR type twist throttles

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).

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