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Polini Cylinder Kit "Sport" 70cc cast iron Yamaha BW's / Slider

Polini Item no.: P166.0074

Polini Cylinder Kit "Sport" 70cc cast iron Yamaha BW's / Slider

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Data Sheet
Suitable for (32)


Polini 80cc Cast Iron Cylinder Kit Sport MBK Booster / Stunt (Minarelli vertical) - an excellent everyday use cylinder for an excellent price, here at Maxiscoot.

The kit includes:
- Cast Iron Cylinder, d = 47mm, with 5 transfer ports and oval exhaust port
- Two-Ring Piston, 10mm pin
- High Compression Cylinder Head, aluminium
- Gasket Set for mounting
- Carbon Fiber Reed Petals, 0.35mm, 2x

Since it is made of cast iron and has a two-ring piston, it is ideally suited for intense everyday use, and is also known for its robustness and power, especially at mid to high rpm range. It can reach appr. 7hp when combined with the right set-up (17.5mm carburetor and sports exhaust).

70cc displacement, meaning it is not street-legal and is reserved for the race track (or closed-off roads).

Data Sheet

Name Polini Cylinder Kit "Sport" 70cc cast iron Yamaha BW's / Slider
Item No. P166.0074
Brand Polini
Homologation No
Displacement 70cc
Stroke Original
Conrod Length Standard
Product Line Sport
Material Cast Iron
Engine Type 2-stroke
Cooling Type AC
Bore 47,6 mm
Piston Pin Original
Number of Piston Rings 2
Cylinder Head Included

Your product goes with the following manufacturers and their models:

Adly (Her Chee)

Rapido 50cc


Amico 50cc AC (1991 - 1992)

Amico 50cc ac (after 1993)

Amico GL 50cc AC

Amico Sport 50cc AC

SR 50cc AC (before 1994) - Minarelli vertical


Pista 2 50cc AC

Pista 50cc AC

Scoop 50cc


Booster 50cc AC (1992 - 1999)

Booster 50cc AC (after 2004)

Booster Next 50cc AC (after 1999)

Booster Next 50cc AC (before 1999)

Booster One 50cc until 2013

Booster Rocket 50cc AC

Booster Spirit 50cc AC (before 2004)

Booster Track 50cc AC

Stunt 50cc AC

Stunt 50cc AC CAT (after 2004)

Stunt Naked 50cc AC


BW's 50cc AC

BW's 50cc AC (after 2004)

BW's Bump 50cc AC

BW's Easy 50cc 2013

BW's NG 50cc AC (after 1999)

BW's NG 50cc AC (before 1999)

Slider 50cc AC (before 2004)

Slider 50cc AC CAT (after 2004)

Spy 50cc AC

Target 50cc

Zuma 50cc AC

Zuma II 50cc AC

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