Road Race 2.5L Head
- Brand: Esslinger Engineering
- Product Code: Pro-Series RR (Road Race) CNC ported 2.5L Duratec Head
- Availability: In Stock
Since 2014 our company has been in a constant development program working on Duratec cylinder heads and engines. These Pro-Series "RR" (Road Rac..
Since 2014 our company has been in a constant development program working on Duratec cylinder heads and engines. These Pro-Series "RR" (Road Race) CNC ported 2.5L cylinderheads are designed around high velocity ports that accelerate heavy cars over a wide rpm range. Airflow is increased over 20% on top of the already highest flowing head casting available from Ford & Mazda! Flowing over 300cfm @ 28" these Pro-series heads are designed to be run on engines that need to make over 250hp and routinely make 300hp on 2.5L, 275hp+ on 2.3L, and 250hp+ on 2L engines! We start with brand new OEM head casting, weld up the EGR passage on the #4 exhaust port, install bronze guides, and completely CNC machine them with our proprietary porting and chambers. After all the CNC machining is done, we do a competition valvejob, and surface the head so it's perfectly flat and ready to go!
We supply the heads bare (ready to assemble), as well as assembled (with flat faced valves, our Ti retainer/dual valvespring kit, and new valvestem seals).
Casting #: RFLX6E (2013+ 2.5L Duratec)
Intake Valve dia.: 36mm
Exhaust Valve dia.: 31mm
Chamber volume: 43.5cc
*** Lead time on all CNC Ported Duratec cylinderheads is 2-3 weeks. Please call or e-mail for a more accurate time quote***