Inner Head Runner 180 High Compression for 52mm Stroke

TRND.030205

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 with 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 – TRND.031205 – 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)