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Description
AR1-HDR4 - HD/Race Rigid 4 PadHD Race Rigid 4 Pad Clutch Kit Specifications: Item Description: HD Race Rigid 4 Pad Product Weight (lbs.): 9. 9 Torque Capacity (ft lbs.): 330 Torque Capacity Over OE: 73% Disc Material: Ceramic Clutch Disc Diameter (Inches): 8. 4 Clutch Disc Diameter (Millimeters): 214 Input Shaft Diameter (inches): 1. 03125 Pressure Plate Type: Heavy Duty Warranty: 12 MonthsDescription: The AR1 HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT
HD/Race Rigid 4 Pad Clutch Kit �Specifications:
- Item Description: HD/Race Rigid 4 Pad
- Product Weight (lbs.): 9.9
- Torque Capacity (ft/lbs.): 330
- Torque Capacity Over OE: 73%
- Disc Material: Ceramic
- Clutch Disc Diameter (Inches): 8.4
- Clutch Disc Diameter (Millimeters): 214
- Input Shaft Diameter (inches): 1.03125
- Pressure Plate Type: Heavy Duty
- Warranty: 12 Months
Description:
The AR1-HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad rigid race discs are made with high-quality ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc, engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.
Features:
- Feel: Light to moderate pedal effort, aggressive engagement, increased gear rattle
- Life: Moderate friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear
- Quality: Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
- Recommended Use: Recommended for race use only
- ACT Difference: 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability
Vehicle Fitment:
- Fitment Info: Application - Engine
| 2002 Acura RSX Base | 2.0 L4 GAS FI 1998cc |
| 2002 Acura RSX Type-S | 2.0 L4 GAS FI 1998cc |
| 2002 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2002 Honda Civic SiR | 2.0 L4 GAS FI 1998cc |
| 2003 Acura RSX Base | 2.0 L4 GAS FI 1998cc |
| 2003 Acura RSX Type-S | 2.0 L4 GAS FI 1998cc |
| 2003 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2003 Honda Civic SiR | 2.0 L4 GAS FI 1998cc |
| 2004 Acura RSX Base | 2.0 L4 GAS FI 1998cc |
| 2004 Acura RSX Type-S | 2.0 L4 GAS FI 1998cc |
| 2004 Acura TSX Base | 2.4 L4 GAS FI 2354cc |
| 2004 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2004 Honda Civic SiR | 2.0 L4 GAS FI 1998cc |
| 2005 Acura RSX Base | 2.0 L4 GAS FI 1998cc |
| 2005 Acura RSX Type-S | 2.0 L4 GAS FI 1998cc |
| 2005 Acura TSX Base | 2.4 L4 GAS FI 2354cc |
| 2005 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2006 Acura RSX Base | 2.0 L4 GAS FI 1998cc |
| 2006 Acura RSX Type-S | 2.0 L4 GAS FI 1998cc |
| 2006 Acura TSX Base | 2.4 L4 GAS FI 2354cc |
| 2006 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2007 Acura TSX Base | 2.4 L4 GAS FI 2354cc |
| 2007 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2008 Acura TSX Base | 2.4 L4 GAS FI 2354cc |
| 2008 Honda Civic MUGEN Si | 2.0 L4 GAS FI 1998cc |
| 2008 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2009 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2010 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
| 2011 Honda Civic Si | 2.0 L4 GAS FI 1998cc |
PROP 65 WARNING:
This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. 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:
- Standard Shipping : 3-10 business days
- 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
4.4 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
comfortable and firm!!
Size: 57 Inch, Color: Light Grey, Size: 57 Inch, Color: Light Grey
this pillow is huge i’m 5’8 and it’s perfect, as soon as i laid down it relived pressure in my back, i get hot fast and you can feel the cooling silk like texture, it’s weighted aswell, as soon as i opened it, it fluffed up an it’s been about 2 hours since and it’s already huge, it says 24-48 hrs to fluff up fully but idk how much bigger it could get lol it’s definitely worth the few extra dollars
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Reviewed in the United States on April 14, 2026
★★★★★ 5
I must have for pregnant women! Definitely helps sleep and comfort for sleeping!!
Size: 57 Inch, Color: Light Grey, Size: 57 Inch, Color: Light Grey
I do love this pillow, it does take up a lot of space on my queen bed! But when I wrap my legs around the pillow, it gives me much relief on my back! It also has basically a built-in pillow so you don’t even need to use a pillow! I love that I was able to unzip the outer material and wash it! You can use it to sit up and support your back, and when the baby comes, you can use to help with feeding! sometimes I have to turn it completely on the other side if I want to turn over, it’s big!! heavy! Very soft! Not flat at all! Firmness is great! Height is great! I highly recommend! I’m also five months! i got it about 2 months ago!!
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Buy this one!
Size: 65 Inch, Color: Light Grey
This was a great buy! I looked through many many different options before buying and this one was the one I chose. Definitely a good choice. It keeps its shape and is cool to the touch which is amazing for a hot sleeper. It helps so much with my sore hips being 7 months pregnant. Fits great on my queen size bed with room still got my partner to sleep comfortably as well. Definitely recommend!
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Great pregnancy pillow!!
Size: 57 Inch, Color: Light Grey
I LOVE this pillow. It arrived quickly and was packaged very well. It was pretty squished when it arrived, but fluffed up very quickly! I didn't notice any odor when I unpackaged it. Love that the cover can just zip off for easy cleaning. It's helped a ton with my hip pain this pregnancy. It stays pretty cool, especially when compared to my normal pillow. First night I had it was the best sleep I've had in a long time and I look forward to laying down with it. Only bummer is it takes up quite a lot of room on the bed. I don't mind, but I do feel bad for my husband who I share with lol.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
good
This pregnancy pillow feels really comfortable and provides good support while sleeping. It is a bit bulky, so sometimes I switch back to my regular pillow, but overall, it still feels really good and helps me get more comfortable at night.
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Reviewed in the United States on May 11, 2026