• Manley Race Series 37mm Stainless Race Flo Valves | Subaru WRX (00-03) / STi (04) (11140-8)
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Manley Race Series 37mm Stainless Race Flo Valves | Subaru WRX (00-03) / STi (04) (11140-8)

Manley Race Series 37mm Stainless Race Flo Valves | Subaru WRX (00-03) / STi (04) (11140-8)

11140-8

In stock

$211.14 USD
$263.93 USD $211.14 USD
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The Manley Race Series intake valves for Subaru WRX (2000-2003 EJ20) and STi (2004) are high-performance engine components designed to optimize airflow and combustion efficiency. Crafted from stainless steel, these 37mm valves are engineered to withstand the demanding conditions of bracket, drag, and oval track racing. Their precise construction ensures durability and consistent performance at engine speeds under 8000 RPM. These valves are an ideal upgrade for racing applications, offering improved airflow characteristics and enhanced engine responsiveness. The stainless steel material provides excellent heat resistance and longevity, making them suitable for high-stress environments.

Designed specifically for Subaru WRX and STi models from 2000 to 2004, these intake valves are a direct replacement for stock components. They are intended for use in high-performance engines operating in racing or spirited driving scenarios. Installation involves standard valve replacement procedures, and the valves are compatible with existing valve seats and guides. These valves are suitable for engines that require increased airflow capacity and durability under racing conditions. They are an essential upgrade for racers seeking to maximize engine output and reliability at high RPMs.

Overview

Manley Performance Intake Valves

Fits Subaru WRX 2000–2003 and STi 2004

Part #: 11140-8

Overview

The Manley Race Series intake valves are high-performance components designed for motorsport enthusiasts and professional racers seeking to maximize their engine's potential. Crafted from premium stainless steel, these valves are engineered to withstand the intense conditions of high-revving engines, making them ideal for bracket, drag, and oval track racing. They are perfect for engines operating under 8000 RPM, providing reliable durability and consistent performance during demanding racing sessions. Whether you're building a competitive race engine or upgrading your high-performance street vehicle, these valves help support optimal airflow and combustion efficiency, contributing to improved power output and engine responsiveness.

Key Features

Designed with precision and durability in mind, the Manley Race Series intake valves feature:
  • 37mm stainless steel construction for excellent strength and corrosion resistance
  • Meticulously engineered for high-RPM performance and longevity
  • Optimized valve face and seat design for improved airflow and sealing
  • Engineered to withstand the stresses of racing environments
  • Suitable for engines operating under 8000 RPM
  • Precision-machined for perfect fit and reliable operation
  • Ideal for bracket, drag, and oval track racing applications

Construction & Design

These intake valves are crafted from high-grade stainless steel, ensuring exceptional strength and resistance to heat and corrosion. The precise machining and design focus on maximizing airflow efficiency while maintaining structural integrity under racing conditions. The 37mm diameter is carefully selected to support high-performance intake systems, promoting better volumetric efficiency and power gains.

Performance & Response

The Race Series valves are engineered to support high RPM operation, helping your engine breathe more freely at elevated speeds. Their design enhances airflow into the combustion chamber, which can contribute to increased power and throttle response. Built to endure the rigors of racing, these valves help maintain consistent performance during extended high-rev runs.

Installation & Fitment

Installation requires standard valve replacement procedures and appropriate engine tuning. These valves are designed to fit Subaru WRX models from 2000 to 2003 and STi models from 2004, ensuring a direct upgrade for compatible engines.

What’s Included

This package includes a set of intake valves crafted for high-performance applications, ready to replace your stock components and support your racing or high-performance build.

Ideal For

Perfect for motorsport enthusiasts, professional racers, and engine builders aiming to enhance airflow, durability, and overall engine response in Subaru WRX and STi models.
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