FM4-XTSS - XT/Perf Street Sprung
SKU: 79583041359

FM4-XTSS - XT/Perf Street Sprung

$275.85 $306.50
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

FM4-XTSS - XT/Perf Street SprungSpecifications: Item Description: XT Perf Street Sprung Product Weight (lbs.): 23. 3 Torque Capacity (ft lbs.): 575 Torque Capacity Over OE: 70% Disc Material: Organic Clutch Disc Diameter (Inches): 10. 5 Clutch Disc Diameter (Millimeters): 266 Input Shaft Diameter (inches): 1. 125 Pressure Plate Type: Xtreme Warranty: 12 Months Description: Upgrade your Mustang's clutch system with the FM4 XTSS kit from ACT, featuring an Xtreme pressure plate

Specifications:

  • Item Description: XT/Perf Street Sprung
  • Product Weight (lbs.): 23.3
  • Torque Capacity (ft/lbs.): 575
  • Torque Capacity Over OE: 70%
  • Disc Material: Organic
  • Clutch Disc Diameter (Inches): 10.5
  • Clutch Disc Diameter (Millimeters): 266
  • Input Shaft Diameter (inches): 1.125
  • Pressure Plate Type: Xtreme
  • Warranty: 12 Months

Description: Upgrade your Mustang's clutch system with the FM4-XTSS kit from ACT, featuring an Xtreme pressure plate designed for the most demanding drivers. ACT Xtreme pressure plates utilize an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. Each diaphragm undergoes a four-stage heat-treating process for unparalleled durability. Precision cover stampings ensure rigidity and consistency.

The kit includes ACT's Performance street discs, which feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, providing quiet operation with increased strength and reliability.

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:

  • Application: Engine
    • 1986-1995 Ford Mustang GT: 5.0 V8 GAS FI | OHV | Naturally Aspirated
    • 1986-1995 Ford Mustang LX: 5.0 V8 GAS FI | OHV | Naturally Aspirated
    • 1993 Ford Mustang SVT Cobra: 5.0 V8 GAS FI | OHV | Naturally Aspirated
    • 1993 Ford Mustang SVT Cobra R: 5.0 V8 GAS FI | OHV | Naturally Aspirated
    • 1995 Ford Mustang GTS: 5.0 V8 GAS FI | OHV | Naturally Aspirated

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: 79583041359

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4.0 ★★★★★
Based on 420 reviews
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Product Reviews
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Verified Purchase
ginnygingin
San Leandro, US
★★★★★ 5
Pretty, but very practical.
Size: Full, Color: Mint Green
The color was exactly what I expected from the photo. It arrived in an unbelievably small package, but expanded quickly once I opened the bag. I waited the recommended 24 hours to be sure it was done. I am pleased that the length is a perfect fit, and I like that it comes up to the back of my neck when I'm sitting in bed. It is a bit softer than I originally imagined, but not so soft that I feel like I'm sinking through it. It's very pleasantly supportive. The fabric is like a soft ribbed corduroy with piping along the outer seam. It looks nice. Both ends have a pocket that is barely noticeable, but is the perfect size to keep your phone close by. I'm temporarily homebound and spending a lot of time sitting in bed, so I'm very glad I invested in this pillow for comfort and convenience. If you ever have trouble with pillows working their way under the edge of the headboard, and into the dusty space between the headboard and the wall, consider this problem solved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
G
Verified Purchase
Grace Mannino
Grantham, US
★★★★★ 5
Measure your bed and space, I did and ordered the perfect fit!
Size: Queen, Color: Navy
Love this wedge pillow. I bought it for our boat stateroom bed. It fits perfectly as beds on a boat are always odd sizes. It is very comfortable allows me to sit up in bed to read. Also keeps our bed pillows from sliding back. Good quality, color and size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
K
Verified Purchase
Kate L.
New York, US
★★★★★ 4
The good & the bad
Size: Queen, Color: Dark Grey
I’ve got mixed feelings bc a for this pillow. Pros: correct width for my queen bed, was comfortable to lean against when sitting up in bed, fabric seems nice, was well packaged (the vacuum seal bag can be reused. Cons: I’m skeptical that the pillow will fluff out further after 2-3 days. The cover can’t be removed - button holes are too small (which means you shouldn’t see the cover stretch to the side exposing the hole like other pillows warned of, so that’s good) so I can’t easily remove the cover to wash. Fabric shows wrinkles a lot. Not as structured as I was hoping based on the listing. I’ve got a plan for how to fix my complaints - add some seat cushion foam inside the white inner liner. I’ll have to cut the buttons off and run the string that was connecting the buttons on either side of the pillow through the foam. Then secure the string to the inner liner to keep the pinched look. Put the cover back on, then add the buttons back with a safety pin to hook them to the inner liner. I think even with these mods, the item will be worth it price wise - other items seemed to be $50-$125 so the additional $35 and effort I’ll put into addressing this will still keep it more cost effective and filled out than the more expensive models available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2025
K
Verified Purchase
Kindle Reader
Grantham, US
★★★★★ 5
Cozy, Cute, and Practical!
Size: Twin/Twin XL, Color: Light Pink
I got this pillow for my daughter to use when she heads off to college this fall, and she absolutely loves it! The light pink color is soft and calming, just what she wanted to match her dorm decor. It’s plush, supportive, and super comfortable, whether she's sitting up to read, study, or just relax. The removable, washable cover is a big plus, and the side pockets are so convenient for stashing her phone or glasses. While the pillow works great on its own, we still plan to get a detachable headboard to complement it for added support. Overall, this is a stylish and functional addition to her dorm setup, and we’re both really happy with the quality. Highly recommend!
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Reviewed in the United States on June 19, 2025
J
Verified Purchase
Jace K.
Belleville, US
★★★★★ 5
Thick, Supportive, and Cozy for Reading or Nursing
Size: Full, Color: Olive Green
This wedge pillow has been a great fit on my daughter’s bed. It’s super soft and cozy, and at the same time offers great support for sitting up in bed. The pillow is nice and thick, so you don’t sink into it — perfect for reading, studying, or lounging without needing multiple regular pillows. I tried it out myself and was surprised at how well it also works as support while nursing an infant. It props you up at just the right angle and feels stable without shifting around. The removable, washable cover is a big plus, and the olive green color is subtle yet stylish. I’m impressed enough that I’ll either be purchasing one for myself soon or adding it to my Christmas list.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025

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