A 80cc 2 stroke bump start / pedal start gas / petrol conversion kit for adult bicycles. Long term spares available as required.Everything you need to install a professional conversion and retain the normal cycle functions. Ideal for bikes with 22 – 28 inch V frames and similarAll the component parts are included for buyers to carry out a complete conversion. The words Petrol and Gas are used to cover our international markets but the fuel is two stroke only.