SKU: 50640894985

Stage 4 Clutch Kit (1MD) for Subaru WRX 2018-2021 2.0L DOHC (FA20DIT) Turbo AWD Includes OEHD Flywheel

Sale price$334.67 Regular price$371.86
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Description

Stage 4 Clutch Kit (1MD) for Subaru WRX 2018-2021 2.0L DOHC (FA20DIT) Turbo AWD Includes OEHD FlywheelAction Clutch's Stage 4 (1MD) Clutch Kit is designed to withstand even the most challenging conditions. Featuring a heavy duty single diaphragm pressure plate, reinforced drive straps, and an Unsprung MIBA Ceramic (available in a 4 or 6 puck) disc, this kit provides peak performance and extreme durability for low mild horsepower vehicles. Our Unsprung MIBA Ceramic clutch kit provides quicker engagement and will introduce some clutch chatter, which

Action Clutch's Stage 4 (1MD) Clutch Kit is designed to withstand even the most challenging conditions. Featuring a heavy-duty single diaphragm pressure plate, reinforced drive straps, and an Unsprung MIBA Ceramic (available in a 4 or 6 puck) disc, this kit provides peak performance and extreme durability for low/mild horsepower vehicles. Our Unsprung MIBA Ceramic clutch kit provides quicker engagement and will introduce some clutch chatter, which will minimize after proper break-in. For those looking to take their dedicated race vehicles to the next level, the Stage 4 (1MD) Action Clutch Kit provides maximum control and power with little compromise on reliability.

At Action Clutch, every kit is quality checked by one of our experienced engineers (with over 60 years of collective experience) and signed off as safe before being released as a finished product. This gives you peace of mind knowing that your Action Clutch will perform consistently every time.

NOTE: Purchasing the wrong type of clutch kit for your specific engine power output can result in premature clutch failure, damage to the transmission and void warranty eligibility. If you’re unsure what kit is right for you, contact Action Clutch direct.

RACE APPLICATIONS / DRAG / ROAD / DRIFT RACING

High-performance racing component. May be used in dual-purpose vehicles. Not intended as OEM replacements. This part is built with performance characteristics.

Torque Holding Capacity: 414 ft/lbs

Note: Clutch and flywheel must be used together as a set without reusing any existing components

 
What’s Included
  • Unsprung MIBA Ceramic 6 Puck Disc
  • Single Diaphragm HD Pressure Plate
  • Pilot Bearing / Bushing (when applicable)
  • Clutch Alignment Tool
  • Conventional Release Bearing
  • Includes OEHD Flywheel


Break-in Requirements
500 street miles / Keep RPM’s under 4500, no more than half-throttle, no boost (if applicable).
Proper break-in is required in order to retain product warranty, ensure longevity and holding capacity.

Disclaimers
Ceramic based clutch discs intend to increase the holding capacity and durability of the clutch as opposed to an increased life expectancy. Using a ceramic based material for easy street driving may contribute to premature wear of the clutch kit due to the harsher engagement and because of the higher tendency to slip the clutch during street driving.

Using a clutch kit with an unsprung clutch disc on a stock or lightly modified power engine that is daily/street driven vehicle can break the rivets on the clutch disc hub. Unsprung clutch kits are not designed for daily/street use or any constant on/off engagement environment. This can be compared to running a marathon in sandals vs a proper running shoe. If you were to run the marathon in sandals, you have no cushion or comfort and can cause injuries or wear you down faster than using proper running shoes.

*Increase in holding capacity is rated in Crank Torque, not Wheel Torque




SFI Spec 1.1 Replacement Flywheels and Clutch Assemblies


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 www.P65Warnings.ca.gov



Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50640894985

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Amazon Customer
Boise, US
★★★★★ 5
They work! Even if you hate socks
I am not a sock wearer. Can't stand having my foot entirely shrouded in cloth. I don't wear socks with my sandals, slides, clogs and other shoes most of the year. Only on the coldest winter days. I know, It's weird. So, with my sock phobia one thing that happens is your heals get dry and rough. I opted to try these because the toes are free. I barely notice the socks on my heels/ankles when my toes get air (outside of bedcovers always). I put good thick lotion on my heels and sides of feet. A little less on the toes so they don't stain anything. The silicone lining on the heel holds that lotion against the affected areas. In a couple days my feet felt soft and looked pretty. No cracks, no white roughness. They look pink and freshly spa-ed. Fit is good on size 9 feet with thickish ankles. Highly recommend.
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Reviewed in the United States on September 2, 2025
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Sonya
Port Orchard, US
★★★★★ 5
Nice Socks, Bad Shipping
The socks are definitely worth the price. They are cozy and non constructive. They colors are nice. My only complaint is the method in which it was shipped. Slapping a mailing label on a clear bag is not acceptable. The shipper didn't consider protecting my privacy. I hate to think if it was something extremely private. Consumers deserve better when it comes to the content of their mail.
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Reviewed in the United States on September 19, 2025
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Joann
Los Angeles, US
★★★★★ 4
There’s room for improvement
These heel support socks are quite comfortable to wear, the cotton blend fabric is soft and breathable. The built-in gel continuously moisturizes the heels, and the effect is more noticeable than applying lotion alone. I usually soak my feet in warm water before bed, apply lotion, and then use these socks. The elasticity is just right, and they don't constrict my feet. If the gel coverage area were a bit larger, the protection would be more comprehensive. Overall, they offer good value for money and are a practical foot care item.
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Reviewed in the United States on December 1, 2025
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KC
Belleville, US
★★★★★ 5
They worked
I got these for my elbows because I think I might have eczema on my elbow. They work very well. However I do wish they were a little looser. As far as putting them on your heels, the fit works well.
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Reviewed in the United States on April 2, 2026
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CatDeLuna
Natrona Heights, US
★★★★★ 5
Good Results
I have always struggled with dry, cracked heels, but I’ve finally found a solution that keeps them consistently hydrated: these special socks with a moisturizing silicone lining on the heels. My heels now feel incredibly soft, but it’s important to note that consistency is key. Wearing these socks every night before bed has made a significant difference. It’s not enough to just wear them once and expect results; you have to be diligent and make it a part of your nightly routine. After a few weeks of nightly use, my heels are much softer and no longer cracked. What I love about these socks is how easy they are to use. Just slip them on before going to sleep, and the silicone lining does its magic overnight. By morning, my heels feel smooth and well-moisturized. For anyone struggling with dry heels, I highly recommend these socks. Remember, the secret is consistency. Stick with it, and you’ll see the difference!
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Reviewed in the United States on June 28, 2024

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