Malossi Racing Cylinder Kit 183 ccm (63 mm) – Big Bore Power for Piaggio & Vespa Euro 4

If you want to give your Euro 4 4T engine noticeably more displacement and pressure, this Malossi Racing 183 ccm cylinder kit is a very strong basis. The big bore cylinder comes with a 63 mm bore and thereby delivers actual 183 ccm. It is manufactured in aluminum with a hard-chromed cylinder bore – ideal for performance and durability in everyday use as well as during sporty driving.

According to the manufacturer, the cylinder can be used with the original cylinder head. Due to the resulting higher compression ratio, you should then consistently fuel with super gasoline or higher. Bottom line: a very solid, powerful 4-stroke cylinder kit Made in Europe – perfectly tuned for models such as Piaggio Medley and Vespa GTS.

Important for tuning: If the cylinder is used on a Piaggio Euro 4 scooter with originally 125 ccm, the Malossi Force Master 2 M5517738 ECU unit is required to adjust the injection quantity and avoid long-term engine damage. For Piaggio Euro 4 engines with originally 150 ccm, you need the M5518182.

Product Properties / Advantages

• Big Bore cylinder kit from Malossi for 4-stroke Euro 4 engines
• Bore: 63 mm
• Displacement: actual 183 ccm
• Material: aluminum
• Cylinder bore: hard-chromed
• Original cylinder head usable according to manufacturer (due to higher compression: use super or higher)
• ECU/mapping adjustment necessary:
  • for originally 125 ccm Euro 4: Malossi Force Master 2 M5517738
  • for originally 150 ccm Euro 4: M5518182
• Made in Europe

Compatibility (Vehicles)

• Piaggio Medley 125 4V (RP8MA)
• Piaggio Medley 150 4V (RP8MA)
• Vespa GTS 125 4V
• Vespa GTS 125 Super / Sport (M45)
• Vespa GTS 150 i.e
• Vespa GTS 125 (ZAPM31)

OEM Number (for comparison purposes)

• OEM: 3117737