The 4 rotor kit has the following:

1. Eccentric Shaft
2. Front counter weight
3. Rear counter weight
4. 2 x Centre plates
5. 2 x Stationary gears (modified)
6. 2 x Stationary gear carriers
7. 2 x Stationary gear external oiling mods
8. Rear main nut
9. 2 x eccentric shaft end caps

This kit is built with all new parts and also uses genuine Mazda parts.

This is a kit only, and will will need an experienced engine builder to organize the rest of the parts and engineering and assemble of 4 rotor engine.