Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz
Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz

Polini

Polini Contessa 72cc Big Bore Kit - Minarelli 2T

SKU 1100-1459
$325.00
Shipping calculated at checkout.
Description

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

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

Compatibility

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. Performance upgrades are not covered by warranty.

California Prop 65 Warning: www.p65warnings.ca.gov
Product Diagrams
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: 47mm aluminum | Rings: 2x 47mm | Wrist Pin: 10mm | Cylinder: Cast iron | Exhaust Studs: 2x M6 | Weight: 4.5 lbs
Model Fitments

Yamaha Zuma 50, BWS 50, Vino 50, Jog 50 (2T); Genuine Buddy 50, RoughHouse 50, Rattler 50; Aprilia SR Pre-2000; Adly various; Universal Minarelli horizontal 2T
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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