88cc Big Bore Race Head Kit - Honda Z50, XR50/CRF50 XR70/CRF70 CT70 TB TBW0936

Description

TB Parts Honda Z50/XR70/CRF70/CT70 88cc Complete Big Bore Kit With Race Head & Big Carb!
Item #TBW0936
TB Parts 88cc Big Bore Kit for Honda Z50/XR70/CRF70/CT70 - See Years Below!  Add some performance to your pit bike!  High quality parts that you have come to expect from TB Parts.  This is a bolt on kit with no case boring required. Comes with everything you need to install as shown.  This is a 52mm bore - we also carry replacement pistons, rings, and gaskets for these kits.  Bolt on some power and make your 50/70 way more fun to ride. This kit includes the TB high flow oil pump, It is recommended when installing any big bore to your 50 or 70. It saves a ton of time installing the oil pump at the same time since removing the cylinder is required to install the oil pump.  Our Race Head has been updated for even more performance!  It now has 25/22mm valves with better porting/flow.  We also kept the combustion chamber the same size and changed the angle of the valves slightly. This will really wake up your stock engine and is comparable in power to the much larger Chinese 124cc engines!!!
Includes the following:
–
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 high compression piston with rings, pin, & clips
– Head gasket kit and clutch cover gasket.
– High performance race camshaft (for the Race Head only)
–
Race Head
Larger valves (now 25/22mm Exhaust Valve is not Stainless) and better flow for increased performance. Also has bigger cooling fins. Includes all necessary parts and
comes assembled!
– 20mm Performance carb assembly. Includes: 20mm carb, intake, heat stop, gaskets, mounting hardware/wrench, long adjustable throttle cable, and a angled dual layer foam air filter.
Fits:
Honda Z50 1982-1987
Honda XR70 All Years
Honda CRF70 All Years
Honda CT70 1991-1994
There are no installation instructions, but if you can replace your piston, you can install this kit as the parts are installed in the same manner as the OEM parts.
However, its highly recommended that a professional install this kit and make sure its tuned and jetted properly.
Looking for more parts? Send us a message and we can put together a custom parts package for you!
Have any questions or concerns ?  Please send us a message and we will gladly help with any questions you may have.  We have been in the motorcycle parts industry for over a decade and are here to help.
We are an Authorized TB Parts Dealer - Buy with confidence!