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Increase clutch holding capacity in a manual Subaru WRX
This Stage 3 clutch package for the manual 2018 to 2021 Subaru WRX is identified by manufacturer part number ACR-1818-FW. It combines a sprung ceramic disc, a single diaphragm heavy duty pressure plate, and a lightened flywheel for the 2.0L DOHC FA20DIT turbo engine with all wheel drive. The ceramic disc is intended for heavy duty street use with occasional drag, road, or drift racing.
Key Features
- Sprung MIBA ceramic six puck disc for increased holding capacity and quicker engagement
- Single diaphragm heavy duty pressure plate with reinforced drive straps
- Fully enclosed spring retainers help contain the springs during use
- Lightened flywheel is included for the specified Subaru WRX application
- Torque holding capacity of 502 foot pounds at the crank
- SFI Spec 1.1 replacement flywheel and clutch assembly designation
- Manufacturer part number ACR-1818-FW for accurate part identification
- Designed for heavy duty street use and occasional drag, road, or drift racing
Fitment
| Years | Make | Model | Engine | Drivetrain | Transmission | Notes |
|---|---|---|---|---|---|---|
| 2018 to 2021 | Subaru | WRX | 2.0L DOHC FA20DIT turbo | All wheel drive | Manual | Application specific clutch kit with lightened flywheel |
Confirm the vehicle has the listed engine, drivetrain, and manual transmission before ordering. Manufacturer part number ACR-1818-FW is intended for this Subaru WRX application.
Specifications
| Detail | Value |
|---|---|
| Brand | Action Clutch |
| Manufacturer part number | ACR-1818-FW |
| Product type | Stage 3 clutch kit with lightened flywheel |
| Disc construction | Sprung MIBA ceramic six puck |
| Pressure plate | Single diaphragm heavy duty |
| Torque holding capacity | 502 foot pounds at the crank |
| Certification | SFI Spec 1.1 |
| Transmission | Manual |
| Drivetrain | All wheel drive |
| Engine | 2.0L DOHC FA20DIT turbo |
| Application | 2018 to 2021 Subaru WRX |
What's Included
- One sprung MIBA ceramic six puck disc
- One single diaphragm heavy duty pressure plate
- One pilot bearing or bushing when applicable
- One clutch alignment tool
- One conventional release bearing
- One lightened flywheel
About Action Clutch
Action Clutch develops application specific clutch packages for performance vehicles. This package combines a ceramic disc, pressure plate, and lightened flywheel with a stated crank torque capacity for the manual Subaru WRX application. Its enclosed spring retainers and reinforced drive straps are designed to support durable use when the clutch is installed and broken in correctly.
Related Parts
- Action Clutch Stage 2 1KS Clutch Kit with Lightweight Flywheel for 2018 to 2021 Subaru WRX
- Action Clutch Stage 1 HD 2OS Clutch Kit for 2018 to 2021 Subaru WRX
FAQ
What is the ACR-1818-FW?It is a Stage 3 clutch kit for a manual 2018 to 2021 Subaru WRX with a 2.0L DOHC FA20DIT turbo engine and all wheel drive.
Which vehicles fit this clutch kit?The verified application is the Subaru WRX from 2018 to 2021 with the listed engine, all wheel drive, and manual transmission.
Is this clutch kit for an automatic transmission?No. The application requires a manual transmission. Verify the vehicle configuration before ordering.
What type of clutch disc is included?The kit includes a sprung MIBA ceramic six puck disc intended to increase holding capacity and provide quicker engagement.
How much crank torque can the clutch hold?The stated torque holding capacity is 502 foot pounds at the crank. This rating is crank torque rather than wheel torque.
Does the kit include a flywheel?Yes. One lightened flywheel is included with the clutch components for the specified Subaru WRX application.
What other parts are included?The package includes a pressure plate, pilot bearing or bushing when applicable, alignment tool, and conventional release bearing in addition to the disc and flywheel.
How should the clutch be broken in?Drive 500 street miles while keeping engine speed under 4500 RPM, using no more than half throttle, and avoiding boost when applicable.
Can this clutch be used for street driving?It is intended for heavy duty street use with occasional drag, road, or drift racing. Ceramic engagement can feel more aggressive than an original equipment clutch.
Does the clutch require special installation?Use qualified installation practices for a manual transmission clutch and confirm the included pilot bearing or bushing applies to the vehicle before assembly.
What certification applies to the assembly?The replacement flywheel and clutch assembly carries an SFI Spec 1.1 designation.
Installation Instructions
- Confirm the vehicle is a 2018 to 2021 Subaru WRX with the 2.0L DOHC FA20DIT turbo engine, all wheel drive, and manual transmission. Verify manufacturer part number ACR-1818-FW before disassembly.
- Disconnect the battery, raise and support the vehicle safely, and remove the transmission according to the vehicle service procedure.
- Remove the original clutch and flywheel, then inspect the crankshaft mounting surface and transmission components for damage or wear.
- Install the supplied lightened flywheel using the vehicle service procedure and the required fastener specifications. Do not reuse damaged fasteners.
- Position the supplied sprung ceramic disc and pressure plate with the alignment tool, then tighten the pressure plate evenly to the vehicle service specifications.
- Install the supplied pilot bearing or bushing when applicable, the conventional release bearing, and any required related hardware for the vehicle.
- Reinstall the transmission, reconnect all removed components, and check clutch operation before lowering the vehicle.
- Complete a 500 mile street break in with engine speed under 4500 RPM, no more than half throttle, and no boost when applicable. Avoid hard launches during break in.
California Residents Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit https://www.p65warnings.ca.gov/
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