Naraku 4-Valve Cylinder Head- Yamaha Cygnus 125cc


£294.70Special order item, delivery approx 5 working days
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Naraku racing 4-valve cylinder head for Yamaha Cyngus/ BWS 125cc 4-stroke air-cooled scooters with big bore cylinder kits.

The valves and springs have been stiffened to allow the engine to be pushed further than ever. The number of valves has of course been doubled allowing more power to be extracted from the engine. The inlet and exhaust outlet has been opened to 25 and 24mm respectively.

Valve diameter:
Inlet: 22.3mm
Exhaust: 20.3mm

Naraku NK600.48

  • Yamaha BWS 125cc
  • Yamaha Cygnus 125cc

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