Polini's entry-level Contessa 72cc Big Bore Kit is an ideal first performance upgrade for riders looking to extract more power from their 2-stroke horizontal Minarelli engine. Relatively straightforward to install and tune, it delivers a meaningful displacement bump without requiring extensive engine work or exotic jetting. Compatible with Yamaha Zuma, BWS, Vino, Jog, Genuine Buddy, RoughHouse, Rattler, and many other Minarelli horizontal-engine scooters.
Features
- 72cc displacement upgrade from stock 50cc
- Cast-iron cylinder for durability and heat retention
- Aluminum piston with 2 piston rings included
- 10mm wrist pin with circlips included
- 2 exhaust studs (6mm) included
- Made in Italy by Polini
Specifications
- Displacement: 72cc
- Piston Diameter: 47mm
- Piston Rings: 2x 47mm
- Wrist Pin: 10mm (with circlips)
- Cylinder: Cast iron
- Exhaust Studs: 2x M6
- Dimensions: 7.5" L x 6" W x 5" H
- Weight: 4.5 lbs
Model Fitment
| Brand |
Model |
| Yamaha |
Zuma 50 (2T) |
| Yamaha |
BWS 50 (2T) |
| Yamaha |
Vino 50 (2T) |
| Yamaha |
Jog 50 (2T) |
| Genuine |
Buddy 50 |
| Genuine |
RoughHouse 50 |
| Genuine |
Rattler 50 |
| Aprilia |
SR (Pre-2000) |
| Adly |
Various models |
| Universal |
Minarelli horizontal 2T engines |
Break-in Note: Ride 200–300 miles before running at full throttle for extended periods.
This product is intended for off-road and racing use only. Not legal for use in California on pollution-controlled vehicles. Check local laws before installing.
California Prop 65 Warning: www.p65warnings.ca.gov
