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Action Clutch Stage 4 1MD Clutch Kit - B-Series

Action Clutch Stage 4 1MD Clutch Kit - B-Series

SKU: ACR-0477-4P

Regular price $349.09
Sale price $349.09
Disc Type
This is an estimated ship date once your order is placed from JHPUSA. Ship dates do not include weekends and holidays.

Action Clutch "1MD" stage 4 clutch kit features a single diaphragm heavy duty pressure plate mated to a metallic direct (unsprung) disc. This clutch kit is engineered for high horsepower  vehicles that encounter heavy-duty street use and frequent drag/road/drifting racing. The unsprung hub is extremely lightweight and provides instant engagement. The clutch features a slight increase in pedal pressure, aggressive engagement, rapid heat dissipation, and outstanding holding capacity.


  • Recommended for race use applications only.
    Not recommended for daily use
  • Good for heavy duty track use
  • Single diaphragm RIGID ceramic clutch system
  • 170% increase in holding capacity
  • Single diaphragm heavy duty pressure plate with reinforced drive straps for durability
  • MIBA ceramic clutch disc engineered for low/mild horsepower vehicles
  • Lighter which provides smoother and quicker shifting
  • Pedal feel: light with aggressive engagement
    Clutch chatter is normal with this type of clutch kit / increased gear rattle
  • Kit Includes: pressure plate, clutch disc, release bearing, alignment tool, and pilot bearing (when applicable)

See pull down menu for available vehicle applications.

Note: 02-05 Civic Si (K20A3) & 02-06 RSX base (K20A3) clutch kits include a lightened flywheel.

Images for illustrations purposes. Actual clutch kit contents may differ from photos.

Note: Purchasing the wrong type of clutch kit for your specific engine horsepower output can result in catastrophic clutch failure, damage to the transmission, and void warranty eligibility. Please use the chart below to help narrow down your Action Clutch kit choice.

Example: using a clutch kit with an unsprung disc on a stock/lightly modified powered engine that is street/daily driven can destroy the rivets holding the unsprung disc together. Unsprung discs/clutch kits are not designed for street/daily use or a constant on/off engagement environment. Similar to running a marathon in sandles vs. running shoes.


We realize that returns and exchanges are a part of the purchasing process and we do our best to make it as easy as possible. If you are not 100% satisfied with your purchase, you can return your order to JHPUSA within 14 DAYS from the invoice date.

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