SKU: 84474126204

NS4-HDR4 - HD/Race Rigid 4 Pad

Sale price$208.35 Regular price$231.50
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

NS4-HDR4 - HD/Race Rigid 4 PadSpecifications: Item Description: HD Race Rigid 4 Pad Product Weight (lbs.): 13. 5 Torque Capacity (ft lbs.): 390 Torque Capacity Over OE: 74% Disc Material: Ceramic Clutch Disc Diameter (Inches): 8. 8 Clutch Disc Diameter (Millimeters): 224 Input Shaft Diameter (inches): 1 Pressure Plate Type: Heavy Duty Warranty: 12 Months Description: The NS4 HDR4 kit features ACT's popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates utilize an

Specifications:

  • Item Description: HD/Race Rigid 4 Pad
  • Product Weight (lbs.): 13.5
  • Torque Capacity (ft/lbs.): 390
  • Torque Capacity Over OE: 74%
  • Disc Material: Ceramic
  • Clutch Disc Diameter (Inches): 8.8
  • Clutch Disc Diameter (Millimeters): 224
  • Input Shaft Diameter (inches): 1
  • Pressure Plate Type: Heavy Duty
  • Warranty: 12 Months

Description: The NS4-HDR4 kit features ACT's popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates utilize an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. These pressure plates undergo a four-stage heat-treating process for superior performance. Precision cover stampings provide rigidity and consistency.

Paired with the Heavy Duty pressure plate is ACT's 4-pad rigid race disc, made with high-quality ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. This lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. The 4-pad rigid race disc provides aggressive engagement and increased gear rattle, making it well-suited for 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: Compatible with 1989-1990 Nissan 180SX Type I and Type II [JDM] models equipped with a 1.8L I4 FI engine.

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:
  1. 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
SKU: 84474126204

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4.8 ★★★★★
Based on 16 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
It Works!!!!!
Size: Powder Poli Ox - Pack of 6
We have only completed the first two steps it Poly Glo set we purchased and has it ever made a difference in the look of our hauler/trailer! The dull oxidize black color is somewhat shiny. Cant wait to put the final two steps on it! A little elbow grease and work did wonders! We will share a photo once the procedure is complete!
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Reviewed in the United States on May 19, 2026
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 4
Could be good
Size: Powder Poli Ox - Pack of 6
I cleaned my RV very thorough from top to bottom before even starting the process with the Poli Glow system. Here's what I learned despite videos and lots of reading reviews. 1. Must be very clean and clear of anything you dont want to stick and show on your final outcome. 2. It takes more coats than you think it would (after 3 coats) it was still really streaky and I was starting to regret using Poli Glow. I ended around 7-8 coats and my rig had no major oxidation at all. 3. As one reviewer said, use a clean microfiber cloth v the applicator that comes with it, I found much better results with no lines. 4. Dont go to heavy on the coating, the instructions say this, but I went super light and it can be very easy to get lines with heavier application. 5. Dont look at your work after 3 coats, you will feel deflated, just keep going for at least 6 coats and then look at your work. 6. Only do small areas and look out for drips and lines, you need to get them out right away. 7. I did not use the Poli Ox, I was able to get any oxidation out with just the Poli Prep 8. Going up and down a ladder for hours sucks! 9. I hope it will come off in the next couple of years when I plan to replace the decals. Honestly, thats my biggest fear is how hard it will be to remove when the time comes. 10. After a scary start, I will say it did turn out pretty nice, was it easy, nope, would I do it again? Not sure, I need some time for my back to heal up! If you do choose Poli Glow know there are other options that maybe a better way to go such as wet sanding etc. Poli Glow is pretty good, but it can be pretty bad also if the surface is not cleaned and the Poli Glow applied correctly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2023
D
Verified Purchase
Derek Baloun
Omaha, US
★★★★★ 5
Poli glow works!
Size: Powder Poli Ox - Pack of 6, Size: Powder Poli Ox - Pack of 6
Works amazing! After many attempts to buff I purchased Poli glow and done in less than half the time and beautiful result.
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Reviewed in the United States on April 19, 2026
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
Wonderful product
Size: Powder Poli Ox - Pack of 6
This product has exceeded our expectations. Thank you
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
L
Verified Purchase
LeGris
Boise, US
★★★★★ 3
Good but DO NOT USE APPLICATOR MITT
Size: Powder Poli Ox - Pack of 6, Size: Powder Poli Ox - Pack of 6
The poli-ox worked well, just know that it will require several applications to remove old buildup and oxidation. once you are done, the paint will still look oxidized, but once you put the sealer on, the color will be deep and shiny. The sealer itself is supposed to be enough for a much bigger RV than we used it for. (17') We used 3/4 of a bottle for 1 side, due to the fact that we would remove and start over because it left ridges like a brush in paint. On the second side of the RV, we scrapped using the Mitt, and low and behold, using a microfiber towel to apply solved all of the issues. No more ridges and the remaining 1/4 of the bottle was enough to apply 5 coats. The mitt also wastes a LOT of product. So be warned use a Microfiber towel (that has been previously washed) and it will save you a LOT of time, money and angst.
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Reviewed in the United States on March 12, 2023

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