ACT AR1-HDSS Heavy-Duty Street Clutch Kit for 02-11 Honda Civic Si/Acura K20-K24 For Sale - New and Used

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

ACT AR1-HDSS Heavy-Duty Street Clutch Kit for 02-11 Honda Civic Si/Acura K20-K24:
$546.95

- AUTHORIZED DEALER
- AUTHENTICPART

Part Brand: ACT Clutch

Part Number: AR1-HDSS

Vehicle Fitment

2002–2006 Acura RSX Base/Type‑S, 2.0 L I4, FWD
2004–2008 Acura TSX Base, 2.4 L I4, FWD
2002–2011 Honda Civic Si (ES/FG), 2.0 L I4, FWD

Fitment Notes

Must use RSX Type‑S flywheel (not included)
Compatible with stock or upgraded flywheels of OEM spec
Not compatible with Type‑R or diesel variants
Organic sprung disc smooths engagement for street use

Features

Heavy‑Duty diaphragm pressure plate provides 35% more clamp load than OEM
Organic sprung disc (8.4″) for smooth, quiet engagement
Balanced to ±0.25 oz‑in for smooth high-RPM operation
Includes throw‑out bearing, pilot bushing & alignment tool
Designed for street and occasional track use--light to moderate pedal effort
Clutch disc protected by steel-back for burst resistance
ACT’s four-stage heat‑treated diaphragm for durability
Computer spin-balanced assembly for smooth performance

Specifications

Torque capacity: 255 ft‑lb (~35% above OEM)
Disc diameter: 8.4″ (214 mm)
Input spline: 24-spline on 1.03125″ spline
Pressure plate type: Heavy‑Duty diaphragm
Weight: 11 lb total assembly
Drivetrain: FWD only

Included Components

1× ACT Heavy‑Duty pressure plate (H024)
1× Organic sprung clutch disc (3000108)
1× Throw‑out bearing (RB313)
1× Pilot bushing (PBNA004)
1× Clutch alignment tool (AT78)

Product Description

The ACT AR1‑HDSS heavy‑duty street sprung clutch kit is built for 2002–2011 FWD Honda and Acura K‑series vehicles, including RSX, TSX, and Civic Si models. This kit combines a robust heavy‑duty diaphragm pressure plate and an organic sprung disc for increased clamp load--up to 35% more than factory--while maintaining smooth engagement for street-friendly operation.

Constructed with a steel-backed friction disc and ACT’s four-stage heat-treated diaphragm, this clutch delivers increased torque capacity, burst resistance, and longevity. Computer-balanced to ±0.25 oz‑in, it offers smooth power delivery at high RPM. The kit arrives complete with throw‑out bearing, pilot bushing, and alignment tool for a seamless install. Ideal for modified street and light-track builds, it balances performance and drivability.

Fitment is confirmed via ACT and verified supplier listings for K20 and K24 Honda/Acura engines. Requires RSX Type‑S flywheel (not included). Compatible with stock and OEM-spec flywheels. Not for Type‑R models. Organic sprung design makes it ideal for spirited street driving. This kit is backed by ACT’s 12‑month warranty and is not CARB-related.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

· · · SHIPPING · · ·

Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
Canada customers - If does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.

· · · RETURNS · · ·

Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
Any returns received installed, mounted, used or missing components will be subject to return fee's.

· · · PAYMENTS · · ·

We accept all payment methods through 's payment system
PayPal, and all major credit cards/debit cards are accepted.

· · · response · · ·

Customer satisfaction is a top priority for us. If you have any issues with your order, please let us know. We will make every effort to resolve any problems and ensure you are satisfied.

· · · CONTACT US · · ·

We appreciate your business. If you have any questions, please message us through and we will respond within 24 hours on weekdays. Feel free to browse our store for other available items. Thank you again for choosing to shop with us!