Big bore kit 180cc for Yamaha Bws125, Cygnus125, Zuma125.
Kit includes: four valves cylinder head EX19/IN21, A6 camshaft and rockers with rollers, billet head`s lids, cylinder with forged piston FJN 59mm, racing clutch and variator, starter for high power, carburetor 29.5mm, bigger intake manifold, air filter, cdi, throttle cable and spark plug.
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.
