M115 6-Bolt Cathedral Port Cylinder Head (Set)

small bore BIG power

Now accepting pre-orders for the next batch – Allow 6-8 weeks for completion.

• 3.780″ Bore Minimum
• Fully CNC ported, 64cc chamber volume
• 225 or 240cc intake port, 96cc exhaust port and 15° valve angle
• 0.625 Deck Thickness
• High Quality Components:
• FED Stainless Steel Severe Duty Valves
• Custom PAC .700″ Lift Valve Springs
• Titanium Retainers
• Note: Chamber width requires 4.030 bore gasket minimum
• Sold Per SET

The Monster Series is the first threshold into HP creation far beyond any OEM head.

Frankenstein introduced another level of horsepower when The Monster was brought to life. FED poured our arsenal of precision engineering into a common cylinder head and woke the industry. Intake and exhaust chambers are 5-Axis CNC ported with our latest high performance program, meticulously hand blended and deburred. Our strict quality control processes ensure extreme attention to detail and precise tolerances. High quality components include FED’s premier stainless steel severe duty valves, custom PAC .700” lift valve springs, titanium retainers, bronze guides .