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Trail Bikes 117cc Stroker Crank Kit 6, Conversion - Z50 (88-99),  XR50  CRF50  XR70  CRF70

Honda TB 117cc Stroker Kit 6
Honda Z50 (88-99), XR50, CRF50
Pricing: $567.95


Honda Trail Bikes 117cc Stroker Kit 6
Honda Z50 (88-99), XR50, CRF50

     •Honda Z50 - (12v) 1988-1999
     •Honda XR50 - All Years
     •Honda CRF50 - All Years
     •XR70 - All years
     •CRF70 - All years

??Key Features:
     •51mm Crankshaft with NTN bearings
     •Race Head – Large valves (now 25/22mm) and better flow for increased performance. Also has big cooling fins.
     •High performance race camshaft
     •Lightweight 54mm aluminum cylinder with steel sleeve, cast in mounts for skid plates, and larger cooling fins.
     •High compression piston with rings, pin, & clips
     •Crankcase and clutch cover gaskets
     •Head gasket kit
     •Genuine Mikuni VM26mm Performance Carb
     •Intake Kit for the Race head
     •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

Kit includes the proven Mikuni VM26 carburetor which will provide better performance and ease of tuning.
Race Head has 25/22mm valves with better porting/flow.

This kit is the complete kit to convert your stock motor into a powerful open class 117cc engine with tons of torque!

??Requires case boring

Recommended Parts:
     •High volume oil pump (available in this section)
     •Oil Cooler
     •CR8HSA spark plug (not required, but recommended)

Note: If you are running the stock Honda clutch, it is recommended to upgrade your clutch to the Manual Kit with the Billet clutch housing.
If you have a Manual Clutch kit with the (cast housing,) we highly recommend upgrading the housing to our Billet Housing.
The stock housing in both the Honda clutch and our regular Manual Clutch kit is not made for this type of power and may fail due to the extra fatigue.
We recommend purchasing the Upgrade Disk Kit that we have available. Also, do not tighten the clutch nut with a hammer and screw driver - it must be torqued on!

As with all 117cc kits on the market, installation requires engine to be disassembled and case bored. Therefore, we highly recommend a professional technician install this kit and the cases bored by a reputable machine shop. If you plan on installing the kit yourself, you will need to have a Clymer or Honda shop manual. Instructions do not come with the kits but the installation of the crankshaft is just like installing a stock Honda crankshaft and both manuals cover this.
Remember! Fast50s provides mechanical services as well! If you want some help assembling your parts, just drop us a request at or call 530-268-7368

Parts Included:

•TBW0319 - Crank
•TBW0318 - Gasket
•TBW0287 - Gasket
•TBW0334 - Gasket
•TBW0790 - Piston
•TBW0332 - Cylinder
•TBW0301 - Throttle Cable
•TBW0316 - Intake Manifold
•TBW0399 - Carb
•TBW0413 - Air Filter
•TBW0949 - Race Head & Valves Assembly
•TBW0300 - Cam Shaft


  • TBW0976
  • TBW0976
  • Trail Bikes
  • New

Shipping Information

  • Item Requires Shipping
  • 8.0 lbs.
  • W18.0000” x H12.0000” x L12.0000”

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