High compression cylinder head for 172/180cc engines, 52mm stroke.
Increases the power and improves the cooling of your 180cc motor scooter!
- Power gain of up to 1.5 to 2 hp possible!
- Fits original Gilardoni 180 cylinder, Malossi 172 cylinder, PM Pro street 1 cylinder etc.
- Special toroidal combustion chamber for improved power delivery.
- The spark plug is centered in relation to the piston.
- Improved head gasket seal, Viton head gasket O-ring included
- Specially designed cooling fins for improved cooling and cylinder head stiffness.
- Optimized for 98 octane gasoline
- Use of NGK CR9EIX or Denso IU27 spark plug recommended
Squish ± 0.9 – 1.0 mm
Delivered including O-rings.
Use for the Aluminum outer head o-ring: 2.9 mm (cord thickness)
Use for the Plastic outer head o-ring: 2.6 mm (cord thickness)