SKU: 70473978942

NS4-HDSS - HD/Perf Street Sprung

Sale price$222.30 Regular price$247.00
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

NS4-HDSS - HD/Perf Street SprungSpecifications: Item Description: HD Perf Street Sprung Product Weight (lbs.): 15 Torque Capacity (ft lbs.): 305 Torque Capacity Over OE: 36% Disc Material: Organic 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 HDSS kit features ACT's popular Heavy Duty pressure plate paired with their most popular street disc. ACT

Specifications:

  • Item Description: HD/Perf Street Sprung
  • Product Weight (lbs.): 15
  • Torque Capacity (ft/lbs.): 305
  • Torque Capacity Over OE: 36%
  • Disc Material: Organic
  • 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-HDSS kit features ACT's popular Heavy Duty pressure plate paired with their most popular street disc. 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 Performance Street disc, featuring premium organic materials with a high copper content for improved heat transfer and a steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, offering increased strength and reliability.

Features:

  • Feel: Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle
  • Life: Longer friction life, extended by ACT's exclusive diaphragm design
  • Quality: Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade
  • Recommended Use: Recommended for street and race use
  • 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.
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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: 70473978942

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4.1 ★★★★★
Based on 12 reviews
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Petey K
Louisville, US
★★★★★ 5
Good content, very small print and photos
Format: Paperback
Get a magnifying glass… the print is tiny. They must have made this book to be a large hard cover because both the print and the photos are so small in paperback. Content looks decent. It’s a gift for my grandson who will probably spend more time with the photos than the reading anyway and his eyesight is better than mine. :D
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
M
Verified Purchase
Museum Man
New York, US
★★★★★ 4
Printing not up to standards.
Format: Paperback
Printing and pics not up to par.I gifted this book to a coworker and he was not as picky as I.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2020
T
Verified Purchase
TDD
Charlottesville, US
★★★★★ 5
Excellent resource
Format: Paperback
Purchased for my teenage son's history research project. Nice compilation, good information and well illustrated.
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Reviewed in the United States on May 29, 2025
D
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dederose1
Alexandria, US
★★★★★ 5
Great for history buff
Format: Paperback
My 13 yr old loves learning about history. This should be a book he enjoys.
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Reviewed in the United States on December 29, 2023
J
Verified Purchase
Jose Abrams
Fort Morgan, US
★★★★★ 3
Letras grandes
Format: Paperback
Lettas muy prwueñas
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026

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