Naraku 09311134 Cylinder-piston kitRef : NARK00199A / 09311134

NARAKU 70 cm³ Cylinder Kit V.2 - Manufacturer reference: NK102.61.2

Designed for air-cooled vertical Minarelli engines, this 70 cm³ cylinder kit (bore 47 mm) made of cast iron is aimed at urban scooter riders looking for a reliable and easy-to-install upgrade. The included piston features a molybdenum coating that protects the piston and wall during the initial break-in period; this film gradually dissolves after a few hours of use.

• Compatibility: air-cooled vertical Minarelli engines (urban scooter).
• Material: cast iron cylinder, piston with molybdenum coating.
• Installation: supplied with a set of gaskets; the original cylinder head can be reused, but a specific 70cc cylinder head is recommended (sold separately).
• Fuel Supply: if the original carburettor is retained, increase the jet by approximately 7 to 10% (indicative value). To optimise performance, a sport carburettor of 17.5 to 19 mm is advised.
• Usage: compatible with original exhaust systems and sport exhausts.

Ideal for installations on popular models equipped with vertical Minarelli engines (e.g. MBK EW 50 Stunt, Yamaha BWS/CW 50, Aprilia Amico 50). Product delivered as shown in the photo. Follow installation instructions and break-in procedures to ensure longevity and reliability.