Big bore kit 180cc for Bws125 Cygnus125 Zuma125 cylinder 59mm head Ex19-In21

Easy to install, no need to have any tuning experience. Just simple work such as changing standard cylinder set.

With this kit you will get 30% more power of your engine.

It can be used with standard crankshaft but for best result we recommend to use this kit with +3mm crankshaft.