SP 50cc 40.3mm Cylinder – Minarelli AM6 – Cast Iron

The SP 50cc 40.3mm cylinder is a standard replacement cylinder for Minarelli AM6 50cc 2-stroke engines. Ideal for replacing a worn or seized original cylinder.

With a 40.3 mm bore, this cylinder maintains the original 50cc displacement and factory performance. Manufactured from cast iron, it offers durability and long service life.

The kit includes a 25mm / 28mm exhaust adapter sleeve, allowing fitment with different exhaust diameters.

Technical specifications:

• Brand: SP
• Displacement: 50cc
• Bore: 40.3 mm
• Material: Cast iron
• Engine type: Minarelli AM6 50cc 2-stroke
• Tuning level: Standard / OEM replacement

Supplied including:

• 40.3mm cast iron cylinder
• Piston
• Piston rings
• Wrist pin
• 2x Wrist pin clips
• Gasket set
• 25 / 28mm exhaust adapter sleeve

Spare parts:

Piston:

40.3mm Minarelli AM5 AM6 Piston

Gasket set:

Minarelli AM6 Original Cylinder Gasket Set

Optional cylinder head:

Minarelli AM6 50cc Cylinder Head

Also known as SP 50cc Minarelli AM6 cylinder, 40.3mm AM6 replacement cylinder or standard cast iron AM6 50cc cylinder.