Malossi MHR Replacement Piston – suitable for cylinder kit M317559 (vertical Minarelli)

If your Malossi MHR cylinder kit needs to regain full compression and clean running performance, this suitable replacement piston is designed exactly for that. It is designed for the Malossi MHR cylinder kit with OEM number M317559 on the vertical Minarelli engine – a proven basis, as found, for example, on the Yamaha Zuma 50, MBK Booster, or Aprilia SR 50 AC.

Ideal as a replacement in case of wear or for a clean overhaul, so that your setup on the vertical Minarelli runs reliably again.

Advantages & Important Features

• Replacement piston for Malossi MHR cylinder kit
• Suitable for cylinder OEM No. M317559 (vertical Minarelli engine)
• For a reliable repair and stable compression once again
• OEM number for comparison purposes: 3411346

Technical Details / OEM Numbers

• Compatible cylinder kit (OEM): M317559
• OEM No. for comparison purposes: 3411346
• Engine: vertical Minarelli

Compatibility (Vehicles)

Fits many vehicles with vertical Minarelli engines, such as Yamaha Zuma 50 (vertical engine), MBK Booster, or Aprilia SR 50 AC – but also many other models from the list.

• Adly: Her Chee
• Aprilia: Amico 50 (1991-1993), SR 50 AC Air (1994), Amico 50 GL, Amico 50 Sport
• Ering: Silver Fox 50
• Italjet: Reporter 50, Pista 50, Scoop 50, Bazooka 50, Yankee 50, Pista 2 50
• Itteco: PT 50, Cool 50
• Karcher: KM 50 Hurricane
• LEM: Flash 50, Tornado 50 2-stroke, Ghibli 50 2-stroke
• MBK: Booster Rocket 50, Booster 50 12 inch (2004), Booster Naked 50 13 inch, Stunt 50 (2004), Booster Track 50, Booster Spirit 50, Stunt Naked 50, Booster 50 NG (1999)
• Yamaha: BWS Bump 50, Spy 50, Slider 50 (2004), BWS 50 12 inch (2004), Zuma II 50 (vertical engine), Zuma 50 (vertical engine), Beluga 50, Target 50, BWS 50 NG (1999)

Selection Tip

Please be sure to compare the OEM numbers (M317559 or 3411346 for comparison purposes) before purchasing and ensure that your engine is indeed a vertical Minarelli – especially for Yamaha Zuma 50, MBK Booster, and Aprilia SR 50 AC, there are different versions depending on the year of manufacture/version.