100cc Big Bore Kit Cylinder Chinese Scooter 50cc Gy6 139qmb Roketa Kymco on 2040-motos

50mm BIG BORE KIT

Everything you need to bump your 139qmb engine up to a whopping 83cc. Many places commonly call this a 100cc kit. The bore diameter is a full 50mm, the largest you can go! Get the advantage on everyone else and surprise the 150's when you keep up with them now. Warning: you may have to register this as a motorcycle now in some states. Comes complete with cylinder, piston, rings, wrist pin, circlips, and gaskets. Capable of using stock head, however performance is fully extracted by using one of our heads listed here.

Please email me with any question, concerns, or requests. (702) 689-6035

For additional images, warranty, and specifications, please follow this link to our Ebay support tech support page: http://www.scrappydogscooters.com/Tech_Talk_with_Mo_.html

Ships from US

  Fits most: 139QMA, 139QMB, QMB139 50cc 4T OEM 139QMB -50cc Stock Parts 4T Also known as the GY6 50cc. It also goes by several other names such as 50QTB. This Chinese 49/50cc engine is used on many of the 4-stroke imported scooters including the new KYMCO 4 stroke units. Some common brands and names being imported are: Shanghai Shenke, EVO 50cc, Zongshen Metro 50cc, Baja Powersports (PEP BOYS made by Zongshen) Baja SC50, Strada RX 50 (4 stroke) Powersports Factory, Jalon JL50QT-21, Falcon and JL50QT-15, JL50QT-16 , Pantera Freedom, Fusion and Retro, Verucci VC50TS-3M, Sunl SL50QT-16, SL50QT-16, SL50QT-18, SL50QT-2, SL50QT-3, Roketa Bahama, Maui, Sicily, Tank, Baotian 50QT-9, Baotian, 50QT-11, Dotera 50QT-11, Jalon JL50QT-18, Sinski XSJ50QT-6, Sinski XSJ50QT-B, Taishan Commuter, Baja motorsports SC-50 sun city, primo,  Taishan Sport Zhong Hu 50cc 4t This kit will fit most 4 stoke 50cc horizontal style (139QMB) Scooter, Moped, ATV 4-stroke air-cooled engines / motors that are being made and imported from Asia, China, Taiwan, Japan, Korea, etc. like kymco agility , baotian This kit will fit : BAOTIAN BT49QT-2 BAOTIAN BT49QT-7 BAOTIAN BT49QT-9 BAOTIAN BT50QT-9 BAOTIAN BT50QT-11 BAOTIAN Ecobike BENZHOU YY50QT BENZHOU City Star 50 BUFFALO Wind ERING Sprint 50 JIN LUN JL50QT KARCHER KM 50 Kreidler Flory 50 Kymco Agility 50 Kymco Agility MMC 50 Kymco Filly 50 Kymco Vitality 50 KYMCO Filly KYMCO Nexxon 50 KYMCO People KYMCO Super 8 KYMCO Vivality KYMCO NEW DINK 50 KYMCO Yager KYMCO Yager GT MSK Ecobike 50 PEUGEOT V-CLick REX Capriolo 50 REX Flory REX RS 450 REX RS 500 REX Off Limit 45 RIEJU Paseo 50 RIEJU Toreo 50 Sachs 49er 50 Sachs Bee SANILI TS50QT-4 QUINGQI QM50QT-6A XINLING ZHONG YU 50 QT-5 ZHONG YU 50 QT-7 ZHONG YU ZY 50QT ZHONGSHEN Wind 25/50 ZHONGSHEN ZS50QT-4 50, Fly Scooters, VIP, Peace, Roketa, United Motors, TGB, TNG, Benelli, PGO, Tomos Nitro, Kymco, and many more..... this list is continually growing.