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ACT 2017-2019 Honda Civic Si HD/Perf Street Sprung Clutch Kit
SKU: ACT-HC10-HDSS
ACT 2017-2019 Honda Civic Si HD/Performance Street Sprung Clutch Kit
Unlock responsive performance for your Civic Si with the ACT HD/Performance Street Clutch Kit. Engineered for spirited driving and everyday reliability, this kit features a high-torque capacity and smooth engagement. Ideal for tuned street builds, this clutch delivers increased holding power without sacrificing drivability.
- Free shipping
ACT Heavy Duty Performance Street Clutch Kit – 2017-2019 Honda Civic Si
Unleash the true performance of your Civic Si with the ACT Heavy Duty Performance Street Sprung Clutch Kit (HC10-HDSS). Designed for drivers who demand more from their clutch—whether on the street or occasional track days—this kit delivers increased torque capacity, smooth engagement, and long-term durability.
Key Features & Benefits
- Enhanced Torque Capacity: Supports up to 363 ft-lbs of torque—an impressive 63% increase over OEM capacity.
- Performance Organic Street Disc: Made from premium organic materials with high copper content for improved heat dissipation, plus a steel-backed lining for superior burst strength and longevity.
- ACT Heavy Duty Pressure Plate: Features a proprietary diaphragm design that boosts clamp load while minimizing deflection and maximizing clutch life.
- Street-Optimized Design: Reduced marcel spring ensures faster shifts and more responsive engagement while maintaining a light to moderate pedal feel.
Technical Specifications
| Clutch Disc Diameter: | 9.4" / 240 mm |
| Input Shaft Diameter: | 1.0325" |
| Input Spline Count: | 24 |
| Flywheel Type: | Streetlite |
| Torque Capacity: | 363 ft-lbs |
| Torque Gain Over OE: | +63% |
| Product Weight: | 33.1 lbs |
| Warranty: | 12 Months |
What to Expect
- Feel: Light to moderate pedal effort with smooth, positive engagement and OE to mild gear rattle.
- Longevity: Longer friction life, thanks to ACT's exclusive pressure plate engineering.
- Build Quality: Precision engineered, carefully assembled, and dynamically balanced for high-RPM reliability.
The ACT Difference
Every ACT clutch is 100% clamp load tested and dynamically computer balanced to deliver consistent performance and smooth operation—even under aggressive driving conditions. Ideal for both daily drivers and weekend warriors looking to step up their game.
- ManufacturerACT
- BrandACT
- MPNHC10-HDSS
- Part Number_333224HC10-HDSS
- UPC842385024291
- Part NumberHC10-HDSS
- Brand NameACT
- VendorACT
Shipping
We utilize UPS, Fedex, and USPS for all of our shipping needs. Carrier choice is based upon availability and needs of the customer and is the sole discretion of SouthernCarParts. We always try to ship within 24 hours of order placement (do to the custom nature of some products, shipping within 24 hours is impossible, actual shipping time frames will be listed in the product description). Please keep in mind that some products such as Custom Fit Car Covers, Lloyds Floor Mats, Painted accessories, and Racemesh Products can take 3 -10 days to ship and are charged at time of order placement. Racemesh products take 4 weeks to ship as they are made to order.
Returns
Should you need to return a part for refund, exchange, or credit, please contact our returns department within 30 days of purchase at orders@southerncarparts.com for a Return Merchandise Authorization (RMA) number. Most problems, such as installation, can be solved with a telephone call (888-631-1433). Southern Car Parts will not accept returned goods without prior authorization and an RMA# written clearly on the exterior of the box. The customer is responsible for freight on all return orders. Parts authorized to be returned, on a non-exchange basis, are subject to a 20% restocking fee. Returns will only be accepted within 30 days of the original date of shipment. Custom painted parts - Once these parts are started, we can refund you less the paint(chemicals) that have been used. Exception is rear spoilers and front splitters, we can refund less 20%.
Custom-made-to-order items are NOT returnable. This includes embroidered floor mats, interior embroidered items, and car covers.
Damages in Shipping
All damages from shipping must be reported to Southern Car Parts within two business days from tracking number delivery confirmation. After two business days, damages become the responsibility of the customer.