| Brand new GY6 100CC BBK BIG BORE KIT for Chinese 4 stroke Scooters & Mopeds Upgrade 49cc 50cc to 100cc
The best way to get more RPM, the maximum upgrade kit for GY6 50cc 139qmb engine. We don't throw in useless parts to make the BBK look enormous. Every component is carefully selected to boost performance, not just for the show. Big Bore kit includes - Fully assembled cylinder head
- 69mm high lift valves, best performance valves
- 69mm high lift rockers, best performance rockers
- Cylinder body
- Cylinder head gasket set
- 3 up-sized main jets and matching pilot jets to upgrade your existing carb, no need to purchase bigger carb
- A9 high performance camshaft best performance combo with 69mm set up
- Piston & Rings set
- 69mm high lift camshaft holder
- Manifold
Bore kit works with 139QMB engine: - Roketa 49cc 50cc 4 stroke scooters such as Bahama, Maui, Sicily, Tank, Baotian 50QT-9
- Kymco 50cc 4 stroke
- E-Ton 49cc 50cc 4 stroke
- Taotao 49cc 50cc 4 stroke scooters such as GT5, Fastwind, atm50-a1, cy50-a, cy50-b, cy50-t3, funny 50, Roman 50, Retro 50, Speedy 50, Venus 50
- SUNL 49cc 50cc 4 stroke scooters
- VIP future champion 4 stroke
- Jonway 49cc 50cc 4 stroke scooters such as warrior 50
- Baja 49cc 50cc 4 stroke scooters such as motorsports SC-50 sun city, primo
- Zhongshen ZS50QT-4
- Baotian BT49QT-2, BT49QT-7, BT49QT-9, BT50QT-9, BT50QT-11
- Fly Scooter 49cc 50cc 4 stroke scooters
- Tank 49cc 50cc 4 stroke scooters
- Jinlun 49cc 50cc 4 stroke scooters
Multiple items can be combined shipping, please look at our other items, thank you. |
