Why Upgrade to ACT Streetlite Flywheel?

Stock flywheel problems:

• Heavy rotational mass slows engine response
• Sluggish throttle feel
• Delayed RPM changes
• Reduced acceleration efficiency

ACT Fixes That:

• Reduced rotational mass for faster revving
• Improved throttle response and acceleration
• Chromoly steel construction for strength
• Precision-balanced for smooth performance

Translation: your car feels lighter without losing reliability.

The Streetlite flywheel is considerably lighter than stock and is essentially the most durable flywheel offering from ACT.

Vehicle Fitment (Honda / Acura Platform)

Designed specifically for:

Honda:

• Civic Si (2002–2011 – K20 engines)

Acura:

• RSX Type-S (2002–2006 – K20A2)

Engine Compatibility:

• K20A / K20A2 / K20Z3

Transmission:

• Manual transmission only

Ideal For:

• Daily drivers
• Bolt-on builds
• Autocross setups
• Street performance builds

If your revs feel lazy—this fixes it instantly.

Materials are properly distributed for optimum strength, lower inertia, excellent heat tolerance and rigidity. ACT’s Streetlite flywheels are most well-liked for street or drag racing. ACT flywheels are serviceable and will also be resurfaced without a want to purchase additional parts.

What’s Included

• ACT 600175 Streetlite flywheel

(Simple. Effective. Necessary.)

Key Features

• Lightweight chromoly steel construction
• Reduced rotational mass vs OEM flywheel
• Improved throttle response and rev speed
• High strength for performance applications
• Precision-balanced design

Performance Benefits

• Faster engine revving and RPM response
• Improved acceleration feel
• Better power transfer efficiency
• More engaging driving experience

No more lazy revs. Just instant response.

⚠️ What to Expect

• Gear chatter at idle (normal with lightweight flywheel)
• Faster RPM drop between shifts
• More responsive (slightly less forgiving) engagement

Translation: less comfort, more performance.

Installation Notes

• Pair with:
  • ACT clutch kit (recommended)
• Torque flywheel bolts to spec (ARP recommended)
• Follow proper installation procedures
• Ideal install during:
  • Clutch upgrades
  • Performance builds

Why ACT 600175 Streetlite flywheel for the K20?

Because ACT:

• Engineers performance-driven drivetrain components
• Focuses on real-world gains, not marketing fluff
• Balances weight reduction with durability

Final Verdict

The ACT 600175 Streetlite XACT Flywheel is one of the best upgrades for K-series platforms—lighter, faster, and built to transform how your engine responds.

Finally makes your car feel as quick as it should.

All rotary engines (including RX7, RX8, and so on.) require additional parts (counterweights) for right kind serve as.