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Universal Parts QMB139 50mm Big Bore Cylinder Kit parts Item No: PFS-151-258 shown for reference only: $91.25 50mm Big Bore Cylinder Kit for 50cc 4-stroke QMB139 engines. Upgrades to 81.3cc based on a stock stroke of 41.4mm! Includes cylinder, piston, pin, circlips, rings, head gasket and base gasket.	4-Stroke Starter Motor 10T GY6 50cc, 609-1804 Item No: W609-1804 shown for reference only: $99.84 Fits GY6 50cc engines and 50cc moped/scooter engines. Teeth: 10; Length (end to end) 4.5; Length (main case: 3; Diameter: 1.85; Bolt hole spacing: 2.75, 2 bolt; Terminal connection: single post tab; Voltage system: 12V. Bronze/gold in color.	4-Stroke Starter Motor 9T GY6 125/150cc, 609-1805 Item No: W609-1805 shown for reference only: $100.11 Fits GY6 125/150cc engine on ATVs, scooters and Go Karts. Teeth: 9; Length (end to end) 5; Length (main case: 3.5; Diameter: 2.35; Bolt hole spacing: 3, 2 bolt; Terminal connection: single post; Voltage system: 12V. Bronze/gold in color.	Airsal 50mm Cylinder Kit for QMB139 50cc parts Item No: PFS-158-3 shown for reference only: $123.37 Airsal 50mm Big Bore Cylinder Kit for QMB139 50cc Engines. Kit includes cylinder, piston, rings, piston pin, cir clips, and gaskets. Aluminum cylinder construction for better heat dissipation.
Hoca 50mm QMB139 Performance Cylinder Kit parts Item No: PFS-169-54 shown for reference only: $142.95 Hoca 50cc QMB139 4-stroke 50mm, Racing Big Bore Cylinder Set. Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, and base gasket.	Performance Cylinder Head, for 50cc QMB139 parts Item No: PFS-169-70 shown for reference only: $163.90 SSP-G 50cc QMB139 4-stroke 50mm, performance cylinder head. Please note: replaces Cylinder Heads with 64mm Valves (Short Valve Style).	OEM Drive Belt, for Icebear 50cc Scooter parts Item No: IBE-50-0002 Archived Listing: $129.00 shown for reference only: $79.00 Drive Belt, factory oem replacement. FITS ALL GY6 50 139QMB engines	Variator, for Icebear 50cc Scooter parts Item No: Archived Listing: $149.00 shown for reference only: $109.00 Variator, factory oem replacement. FITS ALL GY6 50 139QMB engines
18x3 Dipstick O-Ring, Engines and Engine parts : GY6 PS164-201 Item No: PS164-201 shown for reference only: $5.65 18x3 Dipstick O-Ring	Valve Guide O-ring, Engines and Engine parts : QMB139 PS151-113 Item No: PS151-113 shown for reference only: $5.65 Valve Guide O-ring	Drain Bolt Washer, Engines and Engine parts : QMB139 PS151-135 Item No: PS151-135 shown for reference only: $5.65 Drain Bolt Washer	Kick Start Gear Clip, Engines and Engine parts : QMB139 PS151-163 Item No: PS151-163 shown for reference only: $5.65 Kick Start Gear Clip
Washer, Engines and Engine parts : QMB139 PS151-164 Item No: PS151-164 shown for reference only: $5.65 Washer	Oil Dip Stick O-Ring, Engines and Engine parts : QMB139 PS151-24 Item No: PS151-24 shown for reference only: $5.65 Oil Dip Stick O-Ring	Kickstarter Shaft Bushing, Engines and Engine parts : QMB139 PS151-241 Item No: PS151-241 shown for reference only: $5.65 Kickstarter Shaft Bushing	30x3 Oil Filter O-ring, Engines and Engine parts : QMB139 PS151-27 Item No: PS151-27 shown for reference only: $5.65 30x3 Oil Filter O-ring