Cygnus125 Bws125 big bore kit 180cc 5ML four valves head Ex19/In21 piston 59mm

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.