Note: Fits PRB Type S K20A2 head, RBC Civic Si Cylinder head, RSP Cylinder head, and PPA and PPL K24A1 CRV heads. Does not fit in RBB TSX castings. Includes CNC Ported intake and exhaust ports OEM Guides left in for porting Oversized Intake Seats (8) Precision CNC valve job using the latest NEWEN Fixed Turning technology Resurface Valves Included!! Recommended Use All Motor Street USAC Midget High HP open class Road Race 2.4L+ Displacement Naturally Aspirated Engines E85, Methanol, Gasoline Not recommended for high boost applications, but some turbo cars run them with HUGE success. If you are competitively racing and you are running one of our competitor's heads, make the switch and let the results do the talking Features & Benefits V2 Pro 163 Started 11/10/2018 and is 400 CFM and a new intake design. All heads prior to that are V1. Slow-cut precision 5-axis cnc porting, second to none on machining quality. Utilizes a 4 Piston 50 degree 37mm valve which flows better and weighs 7 grams less per valve than other 37s on the market. Precision CNC valve job using the latest NEWEN Fixed Turning technology Full length bronze manganese guide for valve stability. Our intake port has very little turbulence and great velocity when compared to our competitors. You can hear the difference on the bench! Unique power producing exhaust port design. Our heads are all shipped with installation tips, a sheet of desired clearances for setting up your engine, and a flow chart from your head. All heads require a core! You can send us your head, or purchase one from us at the current market price.
