alternative engine

  1. WECSOG

    Japanese 2 stroke dirt bike engines

    Has anyone here built a motorized bike using one of the under-100cc multi-speed dirt bike engines? I know the single speed Morinis and clones are popular, but the big Japanese motorcycle makers have built lots of small 2 stroke dirt bikes too. Honda MT50 and CR80, Yamaha YZ80, Suzuki RM80...