This is an affordable kit that will convert your TB 88cc Race Head kit into a powerful open class 108cc engine (much more powerful than the common Chinese 107 engines).  Also, this crank was made specifically for the newer engines and thus, you will not have any fitment issues like trimming the piston skirts in order to clear the crank or the piston not lining up with the cylinder deck. The kit includes the following parts:

- 51mm Crankshaft with NTN bearings
- High compression piston with rings, pin, & clips
- Crankcase and clutch cover gaskets
- Head gasket kit

This kit requires engine disassembly and therefore, we highly recommend a professional technician install this kit. If you plan on doing it 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 Honda crankshaft. You should also have the following parts:

- High volume oil pump
- Oil Cooler (we do not carry these at the moment)

See the Performance Info section for additional information on our performance products and links to instructions for the top end and oil pump.