This manifold is designed to fit the standard 49cc short stroke engine. No need to mess around boring up your 40 year old original Honda manifold, which will only allow you to go up to 16mm.
The intake diameter is 20mm. The position of the carburator is a perfect copy of the original. Ideal to get the best out of your bore-up project.
This part comes with mounting bolts, gasket not included.
Disclaimer
! Not suitable for use on public roads, use only for track or display purposes!
! this product is explicitly sold WITHOUT WARRANTY. Only buy if you agree to this.