Malossi MHR RC-One 100cc Crankcase – Ø52mm Flanged Mount (Piaggio)

The Malossi MHR RC-One 100cc crankcase (part no. 5720168) is the ultimate race-spec engine base for Piaggio scooters. Engineered to house the Malossi Testa Rossa Ø52mm flanged cylinder kit, this CNC-finished casing is ready to handle over 35 HP with no additional modifications.

Highlights:

• Precision CNC machined for perfect fitment
• Plug & play for Malossi Ø52mm flanged mount cylinders
• Designed for 47 mm stroke and 100 mm conrod
• Compatible with drum and disc brakes
• Fits both short and long wheelbase scooters (12” / 13”)

Includes:

• Flywheel cover
• Intake manifold X360 (Ø21–28 mm, length 27 mm)
• Oil dipstick
• All mounting bolts
• Circlip bearing
• Oversized coolant fitting (Ø18 / Ø13.5 mm)
• Bearings and FKM oil seals (incl. 6204 C3 20×47×14 mm)
• VL18 reed valve

Technical data:

• Material: Die-cast aluminum-silicon alloy
• Crankshaft to clutch shaft spacing: 270 mm
• Crankshaft bearings: 20×47×14 mm
• Seals: FKM high-resistance
• Ignition: Malossi MHR & MHR TEAM inner rotor only
• Cooling: Electric pump only (no mechanical pump support)
• Lubrication: Premix only – no oil pump support
• Fuel system: Vacuum-operated pump supported

Note: Only compatible with Malossi flanged-mount cylinders (e.g. part 3118679). For high-end race use only.