Cylinder Malossi Testa Rossa 100 Derbi

Malossi Testa Rossa 100cc cylinder for Derbi

There is no replacement for displacement

Malossi takes its iconic Testa Rossa kit to the next level with this 100cc cylinder with 47mm stroke, developed exclusively for Derbi engines. The kit offers extreme power, reaching over 32 hp at 14,000 RPM on the dyno.

malossi testa rossa - Maximum power for the race track

This cylinder was developed with the latest Malossi technology and features 7 transfer ports to optimize intake and gas flow. In addition, the combustion chamber insert for the modular Testa Rossa cylinder head has been redesigned to further increase compression and maximize performance.

The cylinder has a closed deck structure that guarantees maximum stability and thermal stability. The Testa Rossa cylinder head enters the combustion chamber and protects the nickel coating from possible detonation. In addition, the exhaust port has been optimized to improve engine performance and responsivity.

100cc Derbi testa rossa cylinder - installation and setup

To install this kit, the crankcase must be milled to fit a crankshaft with a longer stroke (47 mm) and longer connecting rod (100 mm).

It is recommended to add the following components to maximize performance:

• Malossi crankshaft with 47mm stroke (Ref. M5318895).
• Malossi exhaust (Ref. M3220038). This exhaust is fixed to the cylinder with 3 screws and an O-ring to ensure a perfect seal.
• Carburetor at least 30-34 mm
• VForce reed box / Malossi MHR reed valve or other racing reed valve
• Reinforced clutch

technical data testa rossa 100cc malossi:

• Complete cylinder kit: Malossi Testa Rossa cylinder with modular cylinder head, 1-ring piston with piston pin, rings and piston clips, gasket set, stud bolts, parts required for assembly
• Cooling: Liquid-cooled
• Transfer ports: 7
• Material: Aluminum
• Bore: 52 mm
• Stroke: 47 mm
• Connecting rod: 100 mm
• Displacement: 100 cc
• 1-ring piston with 14 mm pin
• 2-piece cylinder head
• Compatibility: Derbi Euro 3 & 4

ATTENTION: 100cc displacement can only be achieved with a 47mm stroke crankshaft and 100mm connecting rod. This cylinder is designed to operate ONLY under these conditions. We actively recommend that you opt for the corresponding Malossi crankshaft!