QMB139 50cc Crankshaft Assembly | Engine Bottom End for 4-Stroke Chinese Scooters
www.mopedgaragehawaii.com

QMB139 50cc Crankshaft Assembly | Engine Bottom End for 4-Stroke Chinese Scooters

$100.00
{{option.name}}: {{selected_options[option.position]}}
{{value_obj.value}}
Store Logo

Moped Garage Hawaii

View Store

Restore your scooter’s engine performance with this QMB139 Crankshaft Assembly, designed for 50cc 4-stroke Chinese scooter engines. This crankshaft is a direct replacement for worn or damaged OEM components and is compatible with most GY6-style 139QMB engines used in scooters, mopeds, and small ATVs. Perfect for rebuilds or bottom-end repairs, this precision-balanced crankshaft offers smooth rotation and long-lasting reliability. Replacement crankshaft for 50cc QMB139 4-stroke engines OEM-style fitment – no modifications required Precision machined for smooth performance and reduced vibration Hardened steel construction for maximum durability Ideal for Chinese-made scooters, mopeds, and ATVs Specifications: Engine Type: QMB139 (50cc, 4-stroke) Wrist Pin Size: Typically 13mm (confirm for your model) Compatible With: Most 49cc/50cc Chinese scooters with QMB139 engines Condition: Brand New Includes: Crankshaft only (bearings and seals sold separately)

Show More Show Less