glixal atmt1-011 139qmb 139qma scooter big bore cylinder kit rebuild kit gy6 100cc 50mm moped atv go-kart glixal "please make sure your engine model before your purchase." 1.brand new products with high quality<br>2.upgrade 50mm 100cc cylinder kit for gy6 50cc engine<br>3.this parts fit most of chinese made scooters and atvs.such as jonway,jmstar,roketa,sunl,tank,peace,taotao