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Malossi Cylinder Kit "Sport" 50cc cast iron Yamaha BW's / Slider

Malossi Item no.: M316901

Malossi Cylinder Kit "Sport" 50cc cast iron Yamaha BW's / Slider

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Data Sheet
Suitable for (32)


Malossi 50cc Cast iron Cylinder Kit MBK Booster / Stunt (Minarelli vertical, 10mm) - a street-legal kit for everyday road use.

The kit includes:

- 50cc Cast Iron Cylinder "Sport" with 6 transfer ports and oval exhaust port
- Two-Ring Piston, 10mm pin
- High-Compression Cylinder Head, aluminium
- Gasket Set for mounting

Designed for the road, this kit is ideally suited for heavy and/or everyday use. It does not require over-the-top maintenance, and its top quality workmanship ensures durability and reliablity.

You can run it with original carburetor and crankshaft (adjusting of mixture is necessary, though), but you'll get much more power with a 17.5mm carburetor and a street-legal sports exhaust.

Perfect cylinder kit for those of you who are looking for a little more power but don't want to do without maximum reliability.

You can also run this cylinder kit with a 12mm crankshaft, in this case you'll have to order the 12mm piston separately (item no. M348538).

Data Sheet

Name Malossi Cylinder Kit "Sport" 50cc cast iron Yamaha BW's / Slider
Item No. M316901
Brand Malossi
Homologation Yes
Displacement 50cc
Stroke Original
Conrod Length Standard
Product Line Sport
Material Cast Iron
Engine Type 2-stroke
Cooling Type AC
Bore 40 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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