Honda | R40 Cylinder Head Machined | Bare Head

100% Designed and Manufactured in the USA-  COMPLETELY NEW CASTING- NO MORE USED HEADS BEING modified.  Why bother with unknown cores?

NO CORE CHARGE

Conventional and high performance combustion chambers available with and without recessed quench pads

• Designed, Cast, and Machined in the USA
• A356-T6 material for maximum strength
• Precision machined using dedicated Hurco, Rottler, and Newen equipment
• Hone-fitted Manganese bronze valve guides
• Custom Durabond copper-infiltrated valve seats standard…BeCu and MoldStar optional
• Wide variety of ports, valve sizes, and combustion chamber designs from OE-style to radical
• Engineered with thick decks to handle extreme cylinder pressure
• Port wall thickness enables “generous” porting not possible with OE castings
• 3-D printed water-jacket cores for superior cooling
• Exhaust-side air/water bleed screw standard
• Heads accept OE Honda VTEC and non-VTEC valve train component