P&L Motorsports EJ25 P1 CNC Cylinder Head Package

This is a Made to Order item and has a longer than expected lead time.

The P&L Motorsports EJ25 P1 CNC Cylinder Head Package for the Subaru WRX and STI is the highest flowing, most horsepower-making cylinder heads available on the market. Used in both our quarter-mile record-setting 8.35 sec & 8.99 sec Subarus, the P&L P1 Cylinder Heads deliver both performance and reliability.

Features:

• Best performing and most developed design on the market
• CNC ported for optimum flow, performance, and consistency across the head
• +1mm valves increase flow and performance
• High heat tolerant Inconel exhaust valves add durability
• Performance valve springs for maximum performance up to 10,000 rpm
• Precisely hand-finished runners, chambers, and blending of the bowl area
• Professionally assembled by P&L Motorsports
• Available on a core exchange or for outright purchase

Applications: All EJ255 and EJ257 equipped Subarus

• 06-14 WRX
• 04-15 STI
• 04-13 Forester XT
• 05-12 Legacy GT
• 05-09 Outback XT
• 04-06 Baja XT
• 05-06 Saab 9-2X

Flow Numbers:

CFM: Cubic Feet Per Minute

*We do flow testing down to .050″ because low lift flow and good data resolution are important.*

*Due to the volatile nature of high horsepower racing applications and outside circumstances such as inability to monitor proper break-in, engine oil selection, ancillary mechanical faults, and improper ECU calibration do not allow us to provide a warranty for these assemblies.