Am selling my engine out my custom zip 183 http://scootershack.co.uk/viewtopic.php?t=504 its done 468 miles only since the rebuild its had all new parts fitted and the engine was built and ported and the casings flowed by MRT Developments specs: (all parts were bought brand new) piaggio typhoon engine (used of course) ported malossi 172cc air cooled kit flowed and ported typhoon casings bgm 55 crank and bearings and oil seals malossi tourque driver malossi secondary gear up malossi 25ml carb with metal float boal malossi mhr reedblock 180 variator standered clutch with malossi blue springs white malossi contra spring polini manifold malossi brake pads brand new oil pump and oil belt gilera runner startor and coil and gilera runner cdi (used) am guessing the bhp is around 25bhp mark this engine can also be fitted to a gilera runner with an 13" nrg wheel (which i have if needed a black one) or even a piaggio typhoon as the engines off one this enigne takes typhoon wheels, zip wheels zip sp wheels, paiggio nrg wheels and more looking for £600 pound am open to sensible offers this engine has cost me well over £1200 pound i can post it to the mainland uk only or you could collect it from me ilford essex ig4-5es post code please pm me if you need more information