... 5.00-12 2, can be installed 300cc or 400cc engine 3,50*100mm keel, 40*100mm frame 250cc triciclo ... item number: HY250ZH-3D Engine specificationsengine type ZHONGSHEN engine single cylinder,4-stroke,water cooledbore×stroke 70×64 ... way valve underneath type camshaft lubricating system pressure splash engine net weight 34kg engine dimension 358×324×458mm maximum power(kw/rpm ...