Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz
Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz
$324.67
5 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
Description
Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz
Key Details
- 166.0076
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 2-Stroke
- Fits Models / Common Applications: Yamaha Zuma and other compatible models may apply.
- Fitment Notes: Big Bore
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a Yamaha?
A: This SKU is listed with Yamaha model fitment where the scooter also matches the listed engine or fitment notes.
Q: Is this for 2-Stroke scooters?
A: This SKU is listed with 2-Stroke engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 4.5 lbs |
|---|---|
| Dimensions | 7.5 × 6 × 5 in |
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.
Key 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
- 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
| 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 |
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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. Performance upgrades are not covered by warranty.
