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Manley Performance Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)
Manley Performance Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)
Manley Performance Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)
Manley Performance Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)
Manley Performance Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)
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Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)

MAN11171-8
807298040295
Valves
20+ Units In Stock - Ships Next Business Day
$ 263.93 $ 211.14
$ 211.14

SKU: 11171-8 | UPC: 807298040295

Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8) 2002-2011 Impreza WRX/STI

Manley Race Master exhaust valves deliver reliable performance for Subaru Impreza WRX and WRX STI models with EJ205 and EJ257 engines. This set of 8 33mm valves handles the heat and stress of racing applications up to 8000 RPM. Ideal for drag, bracket, and oval track builds seeking consistent power.

Key Features

  • Inconel X-750 Material: Retains strength at extreme exhaust temperatures for long-term reliability in high-boost setups
  • 33mm Head Diameter: Matches EJ205/EJ257 cylinder heads precisely for optimal flow and combustion efficiency
  • 7mm Stem / 4.300" Length: Ensures drop-in compatibility with stock keepers and exact valve timing
  • One-Piece Forged Design: Eliminates weak points with swirl-polished heads to reduce turbulence and improve airflow
  • Race Series Engineering: Tested for 8000 RPM operation in demanding motorsport environments

Product Notes

  • Special order item, confirm stock before purchase
  • Inspect valves for proper seating during install
  • Ships in protective packaging to prevent damage

Installation Notes

  • Professional installation recommended.
  • Valve seats and guides must be machined to OEM specs for seal
  • Compatible with stock or aftermarket retainers and springs

This Part Fits

Year Make Model Submodel
2002-2005 Subaru Impreza WRX
2004-2011 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2011 Subaru Impreza WRX STI Limited
2010 Subaru Impreza WRX STI Special Edition

Why Choose Manley?

  • Over 35 years crafting valves for Subaru performance engines
  • Made in USA with aerospace-grade materials
  • Proven in NHRA, SCCA, and NASA racing classes

Frequently Asked Questions

  • Q: Will these fit 2004-2007 WRX STI EJ257 heads?
    A: Yes, direct fit for all 2004-2011 Impreza WRX STI variants with EJ257 including Limited and Special Edition models
  • Q: What material resists high exhaust gas temps?
    A: Inconel X-750 alloy withstands 1800°F+ for turbocharged race applications
  • Q: Does Manley offer warranty on race valves?
    A: Limited lifetime warranty against manufacturing defects when installed by certified shop

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Compact box 6in x 4in x 2in
  • Weight: 1 lb

Request For Information

Have questions about Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)? Fill out the form below and we'll get back to you by the next business day.
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