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Manley 31mm Race Flo Exhaust Valve Mitsubishi 2.0L 4G63 90-99
$201.09

Manley 31mm Race Flo Exhaust Valve for Mitsubishi 2.0L 4G63 (90-99)

Upgrade your Mitsubishi 2.0L 4G63 engine with the Manley 31mm Race Flo Exhaust Valve (Part Number: 11161-8). Designed for performance enthusiasts, this exhaust valve is engineered to deliver exceptional flow and durability, making it a perfect fit for both street and race applications.

Why Choose Manley Performance Valves?

For over 40 years, Manley Performance has set the standard in manufacturing high-quality stainless steel valves. Their Race Series alloy is crafted to withstand the toughest conditions, ensuring that you get the most out of your engine. With a focus on both performance and longevity, these valves are built to outperform competitors in even the most demanding environments.

Key Features

  • Head Diameter: 31mm
  • Stem Diameter: 6.54mm (0.2575")
  • Overall Length: 109.7mm
  • Tip Length: 3.8mm
  • Underhead Angle / Radius: 22° x 7/16"
  • Margin: 0.065"
  • Seat Width: 0.080"
  • Head Design: 17° Dished Head

Performance Benefits

The Manley 31mm exhaust valve features a stunning chrome stem and swirl polished under heads, ensuring not only aesthetic appeal but also enhanced airflow. The fully hardened tips and precisely machined combustion faces contribute to a reliable performance, while the closely controlled margin heights and stem-to-seat concentricity guarantee a perfect fit.

Extreme Duty Applications

If you're pushing your engine to the limits, consider the Extreme Duty material option. Manley’s Extremealloy provides superior hot hardness and high-temperature strength, making it ideal for high-boost applications where exhaust gas temperatures can soar.

Fitment and Compatibility

This valve is specifically designed for the Mitsubishi 2.0L 4G63 engine in models produced between 1990 and 1999. It's essential to check your valve guide size to ensure proper valve stem-to-guide clearance. In some cases, honing the guides may be necessary when replacing stock factory valves.

What Customers Are Saying

Customers have praised the Manley 31mm Race Flo Exhaust Valve for its reliability and performance. Many users report noticeable improvements in engine responsiveness and flow characteristics, making it a favorite among both casual drivers and serious racers.

Upgrade your Mitsubishi 2.0L 4G63 with the Manley 31mm Race Flo Exhaust Valve (Part Number: 11161-8) and experience the difference in performance and durability that comes from years of engineering excellence.

Note: Always consult with a professional mechanic for installation to ensure optimal performance and longevity.
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Vehicle Make/Model
Mitsubishi Eclipse 1990-1994, 1996-1997 Base
Mitsubishi Eclipse 1990-1999 GST
Mitsubishi Eclipse 1990-1999 GSX
Mitsubishi Eclipse 1990-1999 GS
Mitsubishi Eclipse 1995-1999 RS
Mitsubishi Eclipse 1996-1999 Spyder GST
Mitsubishi Eclipse 1996-1999 Spyder GS

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How did Manley Performance Start?

Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.

Evolving in the Automotive Space

Led by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.

What is Manley’s Specialty?

Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.

Get Manley Performance at Vivid Racing

If you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.

If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.

Due to the intended usage of the products sold by Manley Performance Products, Inc., they are sold WITHOUT WARRANTY OR ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR THE INTENDED PURPOSE. Manley Performance Products, Inc. shall not, under any circumstances, be liable for any special, consequential or incidental damages, including but not limited to loss of profits or revenue, loss of other property or equipment, cost of purchased or replacement of goods, or claims by customers of the purchaser, which may arise and/or result from the sale, installation or use of these parts. Installation of parts intended for “off-highway” use could adversely affect the vehicle manufacturer’s warranty coverage. Subject to applicable state law. Some items may not be legal for use in California on pollution controlled vehicles. All weights specified are approximate and subject to manufacturing tolerances. Manley Performance Products, Inc. reserves the right to make changes in design, specifications, materials, or make product changes without incurring liability or obligation with respect to similar product previously manufactured. If technical advice is offered or given in connection with the use of any Products it will be as an accommodation to Buyer and without charge and Seller shall have no responsibilities or liabilities whatsoever for the content or use of such advice.

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