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Manley 00-03 Subaru WRX (EJ20) / 04 STi Exhaust 32mm Stainless Extreme Duty Valve

SKU: MAN11137-1

Valves

MAN Extreme Duty Valves...

Manley 00-03 Subaru WRX (EJ20) / 04 STi Exhaust 32mm Stainless Extreme Duty Valve

SKU: MAN11137-1

Valves

MAN Extreme Duty Valves...

A$157.68
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-10-13 17:07:33

Features

  • Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.
  • Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.
  • Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.
  • XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11137-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Extreme Duty Series Stainless Steel Valves
Product Attributes - UPC
807298030838
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.260 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
32.000mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.235 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
5.96mm
Product Attributes - Exhaust Overall Valve Length (in.)
4.124 in.
Product Attributes - Exhaust Overall Valve Length (mm)
104.750mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (mm)
3.500mm
Product Attributes - Valve Material
XH-426 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Valve Head Style
20 degree dish
Product Attributes - Valve Seat Width (in.)
0.100 in.
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Underhead Angle 25° Radius 11/32 in. Margin .060

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11137-1
SFX Item ID 4060657
Supplier Item Code 4060657
Manufacturer SKU 11137-1
Manufacturer UPC 807298030838
Alternative References (EJ20), 32mm

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeSUBARU
    Beginning Year2002
    Ending Year2005
    Engine TypeH4
    Engine Size2.0L/1994cc
    Engine FamilySubaru 4-cylinder
    Valve Installed LengthStock
    Cylinder Head TypeStock configuration
    Application NotesUnderhead Angle 25° Radius 11/32 in. Margin .060
  • Valve FitmentSearch by engine
    MakeSUBARU
    Beginning Year2004
    Ending Year2021
    Engine TypeH4
    Engine Size2.5L/2458cc
    Engine FamilySubaru 4-cylinder
    Valve Installed LengthStock
    Cylinder Head TypeStock configuration
    Application NotesUnderhead Angle 25° Radius 11/32 in. Margin .060

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