Metrakit Hiper PRO crankshaft Derbi Euro 3-4

Crankshaft Metrakit Hiper PRO for Derbi Euro 3-4.

The crankshaft is forged from high-strength chrome-nickel-molybdenum steel and features an advanced heat-hardening treatment, effortlessly withstanding the engine's demands. Its dynamic balancing through high-density tungsten inserts reduces vibrations at high rpm without losing inertia, protecting the bearings and ensuring that power is transmitted directly to the wheel.

The machined 97 mm connecting rod improves pre-compression in the crankcase, while the 20 mm connecting rod small-end pin provides extreme rigidity, preventing web flex under extreme loads.

It is designed to fit FL-type 100cc cylinders on the MK crankcase Hiper PRO and Metrakit Prorace crankcases.

Technical specifications

• Manufacturer: Metrakit
• Model: Hiper PRO
• Manufacturing material: Chrome-nickel-molybdenum steel
• Heat treatment: State-of-the-art hardness
• Web diameter: 81 mm
• Stroke: 47 mm
• Connecting rod length: 97 mm (machined)
• Needle bearing dimensions: 17x17x14 mm
• Connecting rod small-end pin diameter: 20 mm
• Dynamic balancing: High-density tungsten inserts
• Cylinder compatibility: 100cc FL cylinders