This is a brand new 75cc bore up kit manufactured by Kitaco Co in Osaka, Japan. It fits all Honda 50cc 12V minibikes, genuine cylinder head You can keep genuine camshaft or install a SPL model from the brand to increase torque. LIGHT BIG BORE KIT FOR STOCK CYLINDER HEAD.COST PERFORMANCE FOR EASY TORQUE / POWER INCREASE WITH LESS EXPENSIVE COST. STEEL CYLINDER DISPLACEMENT75cc BORE48 STROKE41.4mm(STOCK) PISTON:CASTING MONKEY/GORILLA FNO, Z50J-16000081805927 MONKEY/GORILLA FNO, Z50J-2000001 FNO, AB27-10000011899999 MONKEY BAJA ALL MODELS DAX(12V) AB26 ALL MODELS JAZZ ALL MODELS MAGNA50 AC13 ALL MODELS MOTRA ALL MODELS CHALYNOT AT MODEL FNO, CF50-3000031 MONKEYR/RT ALL MODELS CD50/BENLY50S/BENLY CL50 FNO, CD50-1500001 I can supply all parts from the brand. The item "KITACO Light Big Bore Kit 75cc Honda Mini Trail 50 Z50J Z50 Monkey Dax Japan" is in sale since Thursday, November 30, 2017. This item is in the category "Automotive\Parts & Accessories\Motorcycle Parts\Antique, Vintage, Historic". The seller is "byebyegaijin" and is located in Saitama, Japan. This item can be shipped worldwide.