Metrakit Pro Race 3 – 70cc Cylinder Kit for Aerox / Minarelli LC

The latest Pro Race 3 for Minarelli horizontal LC (Yamaha Aerox, Nitro, and others) features a CNC-machined head, improved cooling, and updated port design for higher performance.

Technical Specs

• Aluminum cylinder with Nikasil coating
• 5 intake ports
• Boost-port exhaust layout
• CNC-machined, gold anodized cylinder head
• 47.6 mm Vertex single-ring piston (graphite-coated)
• Includes gasket set + spacer for proper squish adjustment

The updated compression ratio and redesigned intake ports provide noticeably more torque and peak power while retaining the iconic Pro Race exhaust layout.

Recommended Setup : Reinforced crankshaft ; High-end racing exhaust ; 24–28 mm carburetor.

• Displacement: 70 cc
• Piston pin: 12 mm
• Cylinder material: Aluminium
• Bore: 47.6 mm
• Stroke: Original
• Conrod length: Standard
• Spark plug thread: M14 (long)

Note: Not homologated for road use.