Top Performances Cylinder Kit TPR 70cc aluminium Yamaha BW's / Slider

Top Performances Item no.: T9921640

Top Performances Cylinder Kit TPR 70cc aluminium Yamaha BW's / Slider



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Data Sheet
Suitable for (33)


One of the top products by Top Performances, available here at Maxiscoot: the Top Performances 70cc TPR aluminium Cylinder Kit Yamaha BW's / Stunt (Minarelli vertical), the most powerful 70cc racing cylinder by this Italian manufacturer.

The cylinder kit includes:

  • 70cc Aluminium Cylinder (d=47.6mm), with 5 transfer ports and oval exhaust port 
  • One-Ring Piston with 10mm pin 
  • High Compression Cylinder Head 
  • Gasket Kit for mounting and for adjusting squish clearance
  • Small End Bearing 10x14x12.5mm

Manufactured in Italy, this Top Performances 70cc aluminium TPR Cylinder Kit Yamaha BW's / Stunt is one of the most powerful 70cc racing kits for Yamaha BW's / MBK Stunt on the market. With the right configuration (21mm carb, reinforced crankshaft and racing exhaust), this kit can reach up to 12hp. Not street-legal, it will wow Booster pilots who want to get maximum performance and torque out of their scooter. It also has pretty long port timings and excellent top speed. A very good choice for pilots who want a little bit more!

Data Sheet

Name Top Performances Cylinder Kit TPR 70cc aluminium Yamaha BW's / Slider
Item No. T9921640
Brand Top Performances
Homologation No
Displacement 70cc
Stroke Original
Conrod Length Standard
Product Line Racing
Material Aluminium
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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