Trkimal Upgrade Big Bore 50mm Cylinder Rebuild Kit for GY6 50cc 139QMB Racing Scooter Parts 64mm Valve Scooter Moped ATV…

Fitment:
  Jonway 49cc 50cc 4 stroke scooters like warrior 50
50cc 4 stroke like Agility 50,People S50 4T,Suer 8 50 4T Pagsta mini 49cc
Baja 49cc 50cc 4stroke scooters like motorsports SC-50 sun city,primo,DR50,Dirt Runner 49
Baotian BT49QT-2,BT49QT-7,BT49QT-9,BT50QT-9,BT50QT-11 Dotera 50QT-11
Eton 49cc 50cc 4stroke like Sport 50
Fly 49cc 50cc 4-stroke scooters
Jalon JL50QT-15,JL50QT-16,JL50QT-18,JL50QT-21,JL50QT-21 Falcon.
Jinlun 49cc 50cc 4-stroke scooters
Roketa 49cc 50cc 4 stroke scooter such Baotian 50QT-9
Sinski XSJ50QT-6, XSJ50QT-B
SSR Lazer 5 Moped
Sunl SL50QT-16, SL50QT-18,SL50QT-2,SL50QT-3
Tank 49cc 50cc 4-stroke scooters
Taotao 49cc 50cc 4 stroke scooter such as GT5,Fastwind,AMT50-A1,CY50-A,CY50-B,CY50-T3,Funny50,Roman 50,Retro 50,Speedy50,Venus50
Verucci VC50TS-3M
VIP future champion 4 stroke
Zhong Hu 50cc,Zongshen Metro 50cc
Zongshen ZS50QT-4
Many more GY6 4-stroke 49cc 50cc 60cc 80cc from china. engine

package Included:
1 * cylinder head comp
1 * cylinder body
1 * piston
1 * piston pin
1 * piston ring
2 * pin clip
2 * valve rockers
1 * oil pump
1 * oil sprockets
1 * the whole gaskets
6 * roller
4 * Bolt

Make sure this fitsby entering your model number.
【Fit for 】 Upgrade GY6 50cc 4-stroke 139QMB engines
【Specification】Cylinder bore:50mm, Cylinder head:50mm, Piston pin:13mm, 64mm valve, it will make the GY6 50cc engine more power to climb hill.
【Parts included】Cylinder head comp, cylinder body, piston, piston pin, piston ring, pin clip, valve rockers, oil pump, oil sprockets, the whole gaskets, roller, Bolt.
【Quality Guarantee】Please feel free to contact us, if you have quality or using problem, we will reply in 24 working days, customer 100% satisfied shopping experience will be our first goal.