Action Clutch Chromoly Lightweight Flywheel - 1998-2002 Toyota Altezza / Lexus IS300 (3S-GE)

Maximize your 3S-GE's performance with the Action Clutch chromoly lightweight flywheel. Heat-treated for durability, tested to 18,000 RPM, and engineered for superior engine response, this premium flywheel delivers the throttle response and rev characteristics demanded by street and race applications.

Key Features:

• Chromoly steel construction
• Lightweight design
• Heat-treated for durability
• Tested to 18,000 RPM
• High thermal capacity
• Street and race applications
• Superior engine response
• Action Clutch quality and engineering

Performance Benefits:

• Improved Throttle Response: Reduced rotational mass increases responsiveness
• Quicker Revs: Engine accelerates and decelerates faster
• High RPM Rated: Tested to 18,000 RPM for race applications
• Heat Resistant: High thermal capacity handles sustained performance use
• Durable Construction: Heat-treated chromoly ensures long service life
• Race Proven: Designed for street and race vehicles

Specifications:

• Brand: Action Clutch
• Part Number: AC122FW
• Product: Chromoly Lightweight Flywheel
• Material: Chromoly steel
• Treatment: Heat-treated
• RPM Rating: Tested to 18,000 RPM
• Thermal Capacity: High
• Application: Street and race
• Barcode: AC122FW

Fitment Information:

• 1998-2002 Toyota Altezza (3S-GE 2.0L)
• Lexus IS300 (3S-GE equipped)
• Engine: 3S-GE 2.0L
• Note: Verify your engine configuration before ordering
• Installation: Professional installation strongly recommended

What's Included:

• Action Clutch chromoly lightweight flywheel
• Installation instructions
• Note: Clutch kit and hardware sold separately

Installation Notes:

• Professional installation strongly recommended
• Remove transmission to access flywheel
• Remove factory flywheel and clutch
• Clean crankshaft flange thoroughly
• Install Action Clutch flywheel using proper torque sequence
• Apply thread locker to flywheel bolts
• Install new clutch kit (strongly recommended)
• Reinstall transmission
• Follow clutch break-in procedure

Chromoly Steel Construction:

The flywheel is manufactured from chromoly (chromium-molybdenum) steel, which provides an excellent strength-to-weight ratio compared to standard steel. Chromoly is significantly stronger than mild steel, allowing the flywheel to be machined thinner and lighter while maintaining the structural integrity needed for high-RPM operation. The material's strength also provides excellent resistance to the thermal and mechanical stresses experienced during performance driving.

Heat-Treated for Durability:

The heat treatment process hardens the chromoly steel, increasing its strength, wear resistance, and fatigue life. Heat treatment is critical for flywheel applications where the friction surface experiences repeated thermal cycling from clutch engagement. The treated surface resists wear and maintains its flatness over time, ensuring consistent clutch engagement throughout the flywheel's service life.

Tested to 18,000 RPM:

The flywheel has been tested to 18,000 RPM, providing a significant safety margin for even the most aggressive race applications. The 3S-GE engine typically redlines around 7,500-8,000 RPM, meaning the flywheel has more than double the safety margin needed for street use. This high RPM rating ensures the flywheel can handle the stresses of sustained high-RPM operation without risk of failure.

High Thermal Capacity:

The high thermal capacity allows the flywheel to absorb and dissipate heat generated during clutch engagement. Performance driving, especially track use, generates significant heat at the clutch/flywheel interface. The chromoly construction and heat treatment ensure the flywheel can handle this thermal load without warping or losing its friction surface integrity. High thermal capacity is especially important for turbo applications where clutch loads can be higher.

Improved Throttle Response and Quicker Revs:

The reduced rotational mass of the lightweight flywheel dramatically improves throttle response and rev characteristics. The engine responds more quickly to throttle inputs, making the car feel more eager and responsive. The engine also revs up and down more quickly, which is beneficial for rev-matching during downshifts and for quick acceleration. This improved response transforms the driving experience, especially for performance-oriented driving with the 3S-GE.

NVH Considerations:

As noted by Action Clutch, the reduced rotational mass of a lightweight flywheel may introduce additional noise, vibration, and harshness (NVH) compared to the factory flywheel. This is a normal characteristic of lightweight flywheels and is an acceptable trade-off for the performance benefits. The additional NVH is typically most noticeable at idle and low RPM. Drivers should be aware of this characteristic before purchasing, as it may not be suitable for those prioritizing a quiet, refined driving experience.

Street and Race Applications:

The Action Clutch chromoly flywheel is designed for both street and race use. The high RPM rating and thermal capacity make it suitable for track days, autocross, and road racing, while the quality construction ensures reliability for daily street driving. The flywheel is an excellent choice for 3S-GE builds that see both street and occasional track use.

Why Action Clutch?

Action Clutch is a respected manufacturer of high-performance clutch and flywheel components, known for quality engineering and proven performance. Their products are designed for enthusiasts who demand reliable performance in demanding applications. Action Clutch flywheels are trusted by racers and enthusiasts for their quality construction and performance benefits.

Installation Tips:

• Install new clutch kit when replacing flywheel
• Clean crankshaft flange thoroughly before installation
• Use proper torque sequence and specifications
• Apply thread locker to flywheel bolts
• Ensure flywheel is properly aligned before tightening
• Follow clutch break-in procedure after installation

Perfect For:

• 1998-2002 Toyota Altezza 3S-GE builds
• Lexus IS300 3S-GE performance builds
• Track day cars seeking improved throttle response
• Turbo 3S-GE builds requiring high thermal capacity
• Street/race builds demanding proven Action Clutch quality

Perfect For: 1998-2002 Toyota Altezza and Lexus IS300 3S-GE owners seeking Action Clutch chromoly flywheel for improved throttle response and race performance.

Pro Tip: Install a new clutch kit when replacing the flywheel - it's the perfect time since the transmission is already removed.

Note: Lightweight flywheels may increase NVH (noise, vibration, harshness) at idle - a normal trade-off for improved performance.

Race Ready: Chromoly steel. Heat-treated. 18,000 RPM tested. High thermal capacity. Street and race applications.

Maximize your 3S-GE with Action Clutch chromoly flywheel - lightweight, heat-treated, 18,000 RPM rated, race-proven performance.