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Top Performances Cylinder Kit "Racing" 70cc cast iron Yamaha BW's / Slider

Top Performances Item no.: T9930000

Top Performances Cylinder Kit "Racing" 70cc cast iron Yamaha BW's / Slider

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Data Sheet
Suitable for (33)


Maxiscoot offers the Top Performances Cast Iron 70cc "Racing" Cylinder Kit MBK Booster / Stunt (Minarelli vertical) : definitely, alongside the "Corsa", the most powerful cast iron 70cc cylinder kit on the market!

The kit includes:
- Cast Iron Racing Cylinder, 47mm diameter, with 7 transfer ports and oval exhaust port
- One Ring Piston, 10mm pin
- High Compression Cylinder Head, aluminium
- Gasket Set for mounting

Even though made of cast iron, the Top Performances 70cc Cast Iron "Racing" MBK Booster / Stunt is a racing cylinder with excellent performance regarding acceleration as well as top speed. With 7 transfer ports and longer port timings, this cylinder kit is definitely an original design by Top Performances and not just a "remodeled" Sport cylinder. It comes with a one-ring piston (10mm pin) for powerful performance!

Data Sheet

Name Top Performances Cylinder Kit "Racing" 70cc cast iron Yamaha BW's / Slider
Item No. T9930000
Brand Top Performances
Homologation No
Displacement 70cc
Stroke Original
Conrod Length Standard
Product Line Racing
Material Cast Iron
Engine Type 2-stroke
Cooling Type AC
Bore 47,6 mm
Piston Pin Original
Number of Piston Rings 1
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)

BW's Spy 50cc AC

Slider 50cc AC (before 2004)

Slider 50cc AC CAT (after 2004)

Spy 50cc

Target 50cc

Zuma 50cc AC

Zuma II 50cc AC

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