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Malossi Cylinder Kit "MHR Replica" 70cc aluminium Yamaha BW's / Slider

Malossi Item no.: M318501

Malossi Cylinder Kit "MHR Replica" 70cc aluminium Yamaha BW's / Slider

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Data Sheet
Suitable for (32)


Malossi 70cc Aluminium Cylinder Kit "MHR Replica" MBK Booster / Stunt - ideal compromise between the power of an aluminium kit and the reliability (without over the top maintenance) of an everyday use kit.

The kit includes:

- Aluminium Cylinder with 6 transfer ports and oval exhaust port
- Two-Ring Piston, d=47mm, 10mm pin
- High Compression Cylinder Head
- Gasket Kit (base, head, exhaust, reed valve)
- Reed Petals (2x) for MHR reed valve, carbon fiber

Great choice for high-mileage drivers looking for maximum power AND reliability.

Set up with the right components (reinforced crankshaft, 17.5mm/19mm carburetor and sports exhaust), it can reach 9/10hp, with a lot of torque at low rpm range and good acceleration.

With 70cc displacement (d=47mm), it is, as matter of course, not street-legal and therefore reserved for the race track or closed-off roads.

Data Sheet

Name Malossi Cylinder Kit "MHR Replica" 70cc aluminium Yamaha BW's / Slider
Item No. M318501
Brand Malossi
Homologation No
Displacement 70cc
Stroke Original
Conrod Length Standard
Product Line Sport
Material Aluminium
Bore 47 mm
Piston Pin Original

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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