Mofoco 040A 40mmX35.5mm Cylinder Head DUAL 12mm spark plug holes, 92mm bore

MOFOCO 040A CYLINDER HEADS

12mm spark plug holes (92mm bore). We have specifically designed these castings for better cooling and better performance than original castings.

55cc Combustion Chambers

Heavy Duty Springs

Aircraft Casting Technology

Larger & Smoother Port Design for Better Flow

Thicker Port Walls & Larger Intake Face

12mm DUAL Spark Plugs

More Cooling Fins - Thicker & Stronger

Thicker Combustion Chamber Ceiling

40mm x 35.5mm stainless steel valves

Chromoly Retainers

92mm Bore with NO STEP

Machined on CNC-NC Milling Machines

Note: These heads are only sold in pairs