Competition Clutch Ultra Lightweight Steel Flywheel

1994–1995 Subaru RS 1.8L AWD EJ18 / 2-738-STU

Part #: 2-738-STU

Overview

The Competition Clutch Ultra Lightweight Steel Flywheel is engineered to enhance the performance and responsiveness of your Subaru RS during spirited driving, track days, or rally racing. Designed specifically for 1994–1995 Subaru RS models equipped with the 1.8L AWD EJ18 engine, this flywheel offers a significant reduction in rotational mass, resulting in quicker engine response and improved acceleration. Whether you're upgrading for competitive racing or seeking a more dynamic driving experience, this flywheel is an excellent choice for enthusiasts who demand durability and high performance.

Built to withstand the rigors of high-stress applications, the STU flywheel is compatible with all performance and stock clutch assemblies, making it a versatile upgrade for both daily drivers and race cars. Its lightweight design helps reduce inertia, allowing your engine to rev more freely and respond faster to throttle inputs, ultimately delivering a more engaging driving experience. This product is ideal for those running Stage 3 and higher clutch kits, or anyone looking to optimize their vehicle's power delivery and acceleration.

Key Features

The Competition Clutch STU flywheel incorporates advanced manufacturing techniques and high-quality materials to ensure maximum durability and performance. Key features include:

• One-piece ring gear for high durability and reliable engagement during clutch operation.
• Constructed from stamped 4140 steel plate, known for its strength and toughness under demanding conditions.
• Manufactured using 2000-ton pressure at 1260 degrees Fahrenheit, ensuring precise forming and structural integrity.
• CNC machined and balanced to original equipment specifications for smooth operation and vibration-free performance.
• Reduced mass ranging from 8 lbs. to 18 lbs., depending on the specific application, to improve engine responsiveness and acceleration.
• Designed for high-stress applications such as forced induction, track racing, and rally events.

Construction & Design

The STU flywheel features a one-piece ring gear that provides exceptional durability and consistent engagement with the clutch. Its stamped 4140 steel construction ensures high strength and resistance to cracking or warping under extreme conditions. The CNC machining process guarantees precise dimensions and a perfect fit, while the balancing process minimizes vibrations and enhances drivability. The lightweight design reduces rotational inertia, allowing the engine to rev more quickly and improving throttle response, which is especially beneficial in racing or high-performance scenarios.

Installation & Fitment

The Competition Clutch Ultra Lightweight Steel Flywheel is a direct bolt-on replacement for the factory flywheel on 1994–1995 Subaru RS models with the EJ18 engine. Its design ensures easy installation without the need for modifications or special tools. No cutting, drilling, or tuning is required, making it a straightforward upgrade for experienced enthusiasts and professional mechanics alike. Proper installation and balancing are recommended to ensure optimal performance and longevity.

• Compatible with all performance and stock clutch assemblies.
• Designed specifically for 1994–1995 Subaru RS models with 1.8L AWD EJ18 engine.

What's Included

• Ultra Lightweight Steel Flywheel
• Installation hardware (if applicable)

Ideal For

• Rally, track, and racing applications requiring high durability and quick engine response
• Enthusiasts seeking improved acceleration and throttle response
• High-performance Subaru RS owners upgrading their drivetrain