Manley Performance Race Series Intake Valves for Subaru WRX and STi – Part Number 11138-8

Description

Upgrade your Subaru WRX or STi engine with the Manley Performance Race Series Intake Valves, Part Number 11138-8. Crafted from high-quality stainless steel, these valves are designed to withstand the demanding conditions of bracket, drag, and oval track racing, operating efficiently under engines running up to 8,000 RPM. The stainless steel construction provides exceptional durability, ensuring long-lasting performance even under high-stress conditions. Chrome stems and hard tips are integrated into the design, offering increased wear resistance and longevity, which is essential for consistent engine operation. Fully machined combustion faces and swirl-polished under-head areas optimize airflow and combustion efficiency, contributing to improved horsepower and better throttle response. These valves are available in multiple shapes, including the Race Master (straight stem) and Race Flo designs, allowing customization based on your specific racing requirements. They are particularly recommended for alcohol engines, especially as exhaust valves, ensuring reliable operation during demanding racing sessions. Whether you’re building a high-performance drag engine or enhancing your bracket racing setup, these valves provide the quality and precision necessary for competitive racing performance. Easy to install and compatible with a range of Subaru Impreza models from 2004 to 2007, the Manley Race Series intake valves are a proven choice for serious racers seeking durability and performance. Note that these valves are Prop 65 compliant, confirming their adherence to safety standards for chemicals used in manufacturing.

Features:

• Stainless steel construction for durability and high-temperature resistance

• Chrome stems and hard tips for wear resistance and longevity

• Swirl-polished under-head area for optimized airflow

• Fully machined combustion faces for improved efficiency

• Available in Race Master (straight stem) and Race Flo shapes

• Recommended for alcohol engines, especially as exhaust valves

• Designed to operate reliably up to 8,000 RPM in demanding racing conditions

Fitment:
Saab 9-2X Aero 2005
Saab 9-2X Aero 2006
Subaru Impreza WRX 2002
Subaru Impreza WRX 2003
Subaru Impreza WRX 2004
Subaru Impreza WRX 2005
Subaru Impreza WRX 2006
Subaru Impreza WRX 2007
Subaru Impreza WRX 2008
Subaru Impreza WRX 2009
Subaru Impreza WRX 2010
Subaru Impreza WRX 2011
Subaru Impreza WRX 2012
Subaru Impreza WRX Limited 2006
Subaru Impreza WRX Limited 2007
Subaru Impreza WRX Limited 2010
Subaru Impreza WRX Limited 2011
Subaru Impreza WRX Limited 2012
Subaru Impreza WRX Premium 2009
Subaru Impreza WRX Premium 2010
Subaru Impreza WRX Premium 2011
Subaru Impreza WRX Premium 2012
Subaru Impreza WRX STI 2004
Subaru Impreza WRX STI 2005
Subaru Impreza WRX STI 2006
Subaru Impreza WRX STI 2007
Subaru Impreza WRX STI 2008
Subaru Impreza WRX STI 2009
Subaru Impreza WRX STI 2010
Subaru Impreza WRX STI 2011
Subaru Impreza WRX STI 2012
Subaru Impreza WRX STI Limited 2007
Subaru Impreza WRX STI Limited 2011
Subaru Impreza WRX STI Limited 2012
Subaru Impreza WRX STI Special Edition 2010
Subaru Impreza WRX TR 2006
Subaru Impreza WRX TR 2007