Metrakit FL Hyperpro Crankcase Derbi Euro 3 / 4 – 47mm Stroke (100cc FL)

The Metrakit FL Hyperpro crankcase (part number 700c0100) is developed for tuners who want to install FL 100cc components on Derbi Euro 3 and Euro 4 engines without additional machining.

Since original Derbi crankcases are not designed to handle power outputs up to 40 hp, Metrakit engineered a reinforced and optimized version. Made from high-quality cast aluminium, it offers improved heat dissipation, increased wall thickness and superior strength for extreme performance setups.

Main features:

• Designed for FL cylinders and 47 mm stroke crankshafts
• Compatible with 2x 6304TN9 C3 bearings (20x52 mm)
• Enlarged crankshaft bearings (6304) for extended durability
• Upgraded balance shaft needle bearing
• Extra clearance for large diameter carburetors
• Compatible with larger crankshaft diameters
• Prepared for Ø14 mm swingarm axle (easy drilling without splitting the engine)
• Compact and lighter design (starter motor deleted)
• Compatible with V-Force 3 and V-Force 4R reed valves
• Fully compatible with original Derbi Euro 3 / 4 components
• Reinforced wall thickness for heavily tuned engines

The FL Hyperpro crankcase allows installation of FL 100cc components without additional machining. A must-have upgrade for serious performance enthusiasts.

Delivery: Supplied 100% bare, including center gasket and mounting bolts.