Minarelli 2-Stroke 70cc Big Bore Kit 10mm Pin

Is your scooter to slow? Thats what I thought! This big bore kit will solve the problem of loosing speed going up hills, give you about twice the acceleration power, and even give you a higher top speed. You can't go wrong upgrading your engine to 70cc. One important detail you must know is your stock scooter has a 50cc oil pump installed on it from the factory. This pumps 2-stroke oil into your engine automatically as you ride. When installing a 70cc big bore kit, you must add about a tablespoon (about a cap full from your 2t oil bottle) of oil when you fill your gas up. This will insure your now 70cc engine is getting the proper oil amount.

This kit will work on all Jog/Minarelli (or 40QMB engines. This number can be found on the left side of the engine case) 2-stroke engines with a 10mm piston pin. If you are unsure what you have, let us know your model in the comment section at check out.

Also, don't forget, when putting a larger cylinder on your scooter, to up-jet your carburetor. We recommend starting your jetting rich, and then working your way down to find the perfect mix.

Specs:

- Steel Cylinder
- Aluminum Cylinder Head
- Wrist Pin Diameter: 10mm
- Wrist Pin Length: 38mm
- Displacement: 70cc
- Fits 1PE40QMB Minarelli based engines with 10mm wrist pin
- Piston Diameter: 47mm
- Overall Height (cylinder): 87mm
- Includes Wrist Pin Bearing

Supported models:

- Yamaha Zuma 50 YW50 (This will not fit Zuma 96-01 models)
- Vino 2T
- Yamaha Jog 50 1991-2001
- Axis Breeze
- Vento Triton Zip
- Hammerhead
- TNG LS49 Venice
- Adly: Fox, Jet, Noble, Thunderbike,
- Malaguti: F10, F12, F15, Firefox, Yesterday
- Aprilia
- Italjet
- Most Chinese two stroke scooters
- BWS 2002-2011
- United Motors X-Speed 50 (00-05)
- Vento Triton Zip 50
- Strada 50
- Muz 50
- Mosquito 50
- PGO - Genuine Buddy 50cc, Black Cat 50cc, and Rattler 50
- Keeway
- Eton Beemer and Matrix 50

This kit will only work on scooters with a 10mm Wrist Pin.

If you want even more power, check out our stage 2 kit!