Cylinder and crankshaft kit Italkit 80cc c.43mm b.85mm Derbi Variant Start 5

Italkit 80cc Cylinder and crankshaft kit 44 mm stroke for Derbi Variant Start 5.

The Italkit 80cc kit for Derbi Variant Start 5 is designed to completely transform the engine's behavior, increasing displacement and replacing the original assembly with a higher-performance cylinder kit.

The combination of the 48 mm cylinder with the Italkit 44 mm long-stroke crankshaft makes it possible to achieve an engine with more power, better throttle response, and greater ability to maintain speed while riding. This setup is aimed at users seeking a significant increase in performance compared with the original assembly.

The kit includes a 2-ring piston, a two-piece cylinder head with cover and removable insert, and the specific crankshaft for this assembly. The two-piece cylinder head facilitates access to the combustion assembly and allows setup adjustments according to the engine's needs.

To properly take advantage of an 80cc cylinder, it is not enough to install the kit alone. It is recommended to check the condition of the entire engine and accompany the setup with suitable components. It is advisable to install new crankshaft bearings and seals during assembly, especially if the engine has many kilometers or is completely disassembled.

To achieve the expected performance from the kit, it is also recommended to adapt the rest of the engine components, such as a larger-diameter carburetor, a suitable reed block, an exhaust designed for larger displacements, and a reinforced clutch capable of handling the increased torque.

Correct tuning of the carburetion, transmission, and ignition is essential to achieve reliable operation and avoid problems resulting from an incorrect mixture or insufficient setup.

Technical specifications

• Brand: Italkit
• Type: Cylinder and crankshaft kit
• Displacement: 80 cc
• Cylinder diameter: 48 mm
• Stroke: 44 mm (long stroke)
• Piston: 2 rings
• Cylinder Head: 2 pieces (cover + removable insert)
• Crankshaft: 44 mm long stroke
• Kit reference: K.12.580.G
• Cylinder reference: CI.12.580.GD
• Crankshaft reference: CB.12.10.44
• Cylinder head cover reference: CU.12.40
• Cylinder head insert reference: CU.12.42.1
• Gasket set reference: VJ.12.11

Compatible models

DERBI

• Variant Start 5