Cylinder Kit Athena Sport Pro 80cc d=47.6 stroke 43/85mm Nitro / Aerox

Cylinder kit Athena Sport Pro 80CCM Minarelli LC

Athena Sport Pro 80cc cylinder for long-stroke crankshafts (43mm) - powerful long-stroke tuning cylinder for liquid-cooled Minarelli engines (Yamaha Aerox, MBK Nitro).

Performance Athena 80cc ALU Sport cylinder

The Athena Sport Pro 80ccm is one of the few long-stroke cylinders not built for extreme revs. It's identical in design to the Stage6 Sport Pro MK1 but with 4mm longer stroke. This is an aluminum cylinder with Nikasil coating, 5 transfer ports, and a simple exhaust port. It comes with a 1-ring piston (12mm piston pin) and a high-compression one-piece cylinder head, made for crankshafts with 43mm stroke and 85mm conrod. Displacement is increased to 80cc.

Thanks to the longer stroke, the bore/stroke ratio is improved, giving the engine a much better power curve than tuning cylinders designed for standard stroke. The result is solid torque – in other words, "more power" across the full RPM range, boosting both acceleration and mid-range punch. For even more performance, we recommend a 24mm carb and a racing exhaust (e.g. Yasuni C16, Stage6 R1200, etc.). With the right setup and tuning (carb, variator, etc.), this kit can easily reach 17–19 hp – awesome! But heads up – a bit of know-how and experience is definitely recommended.

Scope of delivery Athena Sport Pro 80 cylinder kit:

• Nikasil-coated aluminum cylinder, with 5 transfer ports and oval exhaust
• Bore 47.6mm / stroke 43mm
• 1-ring piston, 12mm piston pin
• High-compression cylinder head, one-piece
• Gasket set for assembly and squish clearance