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Gear Box

Stock parts for 49cc/50cc 4-stroke QMB139 engines. This engine is the most popular 50cc 4-stroke engine used in Chinese scooters.
Product Image Item Name- Price
6004-2RS Bearing

Gearbox Bearing size # 6004-2RS for 50c...

$7.49
6303x3-3/C3 Bearing

6303x3-3/C3 Bearing •Inner Diameter: ...

$7.49
Final Drive Gear

Final Drive Gear for 50cc 4-stroke QMB1...

$19.99
Final Drive Shaft

Final Drive Shaft for 50cc 4-stroke QMB...

$21.99
Gearbox Dowel Pin

Gearbox Dowel Pin for 50cc 4-stroke QMB...

$0.99
Gearbox Gasket

Gearbox Gasket for 50cc 4-stroke QMB139...

$4.99
Gearbox O-ring

Gearbox O-ring for 50cc 4-stroke QMB139...

$0.99
Outer Shaft Oil Seal

Outer Shaft Oil Seal for 50cc 4-stroke ...

$2.49
Rear Drive Shaft O-ring

Rear Drive Shaft O-ring size 5.6X1.5 fo...

$0.99
Rear Drive Shaft Type-1

Rear Drive Shaft, Type-1 Long Version f...

$26.99
Rear Drive Shaft Type-3

Rear Drive Shaft Assembly, Short Versio...

$29.99


New Products For October - FULL-SIZE SCOOTERS PARTS

6004-2RS Bearing

Gearbox Bearing size # 6004-2RS for 50c...

$7.49
Gearbox Gasket

Gearbox Gasket for 50cc 4-stroke QMB139...

$4.99
Final Drive Shaft

Final Drive Shaft for 50cc 4-stroke QMB...

$21.99
Final Drive Gear

Final Drive Gear for 50cc 4-stroke QMB1...

$19.99
Rear Drive Shaft Type-1

Rear Drive Shaft, Type-1 Long Version f...

$26.99
Rear Drive Shaft Type-3

Rear Drive Shaft Assembly, Short Versio...

$29.99

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