Malossi MHR 172cc 65mm Cylinder Kit – Piaggio & Gilera 125-180cc 2-Stroke LC

The Malossi MHR 172cc cylinder kit is a high-performance racing upgrade for Piaggio and Gilera 125cc, 150cc and 180cc 2-stroke liquid-cooled engines.

With a 65 mm bore and an effective displacement of 172cc, this cylinder delivers a substantial increase in power and torque. Ideal for performance and race-oriented builds.

Manufactured from aluminium with Nicasil coating, it offers excellent heat dissipation and durability. The cylinder features a large oval exhaust port and 6 transfer ports for maximum gas flow and strong top-end performance.

For optimal results, this MHR cylinder should be combined with a suitable carburetor, performance exhaust and reinforced crankshaft.

Technical specifications:

• Brand: Malossi
• Series: MHR
• Manufacturer number: 3111140
• Engine type: Piaggio 125-180cc 2-stroke
• Displacement: 172cc
• Bore: 65 mm
• Material: Aluminium with Nicasil
• Cooling: Liquid cooled (LC)
• Wrist pin: 16 mm
• Exhaust port: Oval
• Transfer ports: 6
• Tuning level: Race

Supplied including:

• 65mm aluminium cylinder
• Cylinder head
• Piston
• 2x Piston rings
• 16mm wrist pin
• 2x Wrist pin clips
• Reed petals
• 2x Exhaust studs

Spare parts:

Inner head:

Malossi Inner Cylinder Head Piaggio Gilera 180cc LC

Gasket set:

Malossi 172cc Piaggio 125-180cc LC Gasket Set

Piston sizes 0, A, B, C and D:

Size 0 | Size A | Size B | Size C | Size D

Piston ring set:

Malossi 65mm Piston Ring Set

Also known as Malossi MHR 172cc Piaggio cylinder, Malossi 65mm Gilera 180cc kit or Malossi 172cc 2-stroke LC racing cylinder.