2-stroke 50cc big bore cylinder kit: Yamaha jog top end kit, 1PE40QMB minarelli 47mm Cylinder kit.



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"I have owned 5 different scooters over the years. 250cc CFMOTO, Roketa 150cc 4-stroke GY6, United Motors 50cc 2-stroke and a SunL 50cc 4-stroke QMB139. I can rest assured that no matter what make or model I have, Partsforscooters.com will always have the parts I need. I was impressed by your sales staff's knowledge of both stock and performance after-market parts. Shoot...I have a new performance muffler (169-3) for my Roketa 150cc that turned it from BLAH to YAH! Street Scooters, ATVs, Dirt Bikes, you name it and these guys have the parts. Keep rockin and rollin with your excellent service. You have a customer for life!"
Mike R.-California

"I am not a rich man, but I wanted my family to enjoy ATV riding. I bought three different Chinese made ATVs; a 250cc for me, 110cc for my wife and a 110cc for my son. Lots of people said beware, because you can't get parts for them. But, I found you guys online and all 3 of my orders shipped quickly. Beware of nothing, because Partsforscooters.com makes it easy and obtainable on my budget." Jeff A.


	70cc 2-stroke Upgrade Big Bore Kit

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Big Bore Cylinder set for 50cc 2-stroke Minarelli engines found on many popular 2-stroke full size scooters and ATVs such as Malaguti, Yamati, United Motors X-Speed, Aprilla, CPI, Benelli, Vento, Eton, Adly and many more. **Note: This is a non-returnable item. Please confirm this is the correct item prior to purchasing. Please see our Warranty & Returns for further detail.

Specifications

Wrist Pin Diameter: 10mm
Wrist Pin Length: 36.8mm
Displacement: 70cc
Fits 1PE40QMB Minarelli based engines with 10mm wrist pin
Piston Diameter: 47mm
Please see below for measurements

Supported Models

Geely Model 18, TGB, Vento Zip R3i, Various unlisted makes/models, Diamo, Yamaha, Eton, 40QMB 50cc 2-stroke, Peugeot

Part Number: 169-57

Old Part Number:

Minarelli Performance Chrome Exhaust (*Click* for in-stock date)

Performance Chrome Pipe for 50cc 2-stroke 1PE40QMB Minarelli air-cooled engine based scooters. Please check fit before ordering.

Price: $119.99

Uni Chrome Air Filter

Uni "Dual throat" Chrome pod with Eurethane end. ID: 1 5/8(42mm)-1 3/4" (46mm) This chrome pod filter features a deluxe chrome end cap, black foam element, black Uerethane snout with a stainless clamp.

Price: $17.49

50cc GY6/QMB139 Performance Head

50cc QMB139 4-stroke 51mm, performance cylinder head.

Price: $100.99