SKU: 37717117457

Advanced Clutch HD/Perf Street Rigid Kit (AI4-HDSD)

$222.75 $247.50
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  • USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

Advanced Clutch HD/Perf Street Rigid Kit (AI4-HDSD)AI4 HDSD kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use 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. The ACT performance street rigid hub discs feature premium organic materials with

AI4-HDSD kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use 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. The ACT performance street rigid-hub discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. The chrome-moly hub is heat-treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. These discs are the minimum weight street disc for faster shifts. ACT's street rigid-hub discs provide race-proven performance with street manageability.

Features:

  • Light to moderate pedal effort, smooth positive engagement, increased gear rattle
  • Longer friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear
  • Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade
  • Recommended for street and race use
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability
    • 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: 37717117457

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    4.1 ★★★★★
    Based on 1200 reviews
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    Mariel
    Boise, US
    ★★★★★ 5
    Well made, light fabric. Waist doesn't roll.
    These bamboo underwear really do keep you cool. They fit true to size, and wear easily. the wide elastic waist band doesn't roll on me. They are comfortable to wear, washed and dried easily. The material has some stretch to it, but not a lot. Well made, no stray strings. Perfect fit for me. Just what I was looking for.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 17, 2026
    F
    Verified Purchase
    Finngirl
    Chelsea, US
    ★★★★★ 5
    Good quality, smooth feel
    I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 31, 2026
    S
    Verified Purchase
    Skurtzo
    Houston, US
    ★★★★★ 4
    A little snug on the thighs
    Size: Medium, Color: Multicoloured G (5-pack)
    Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 29, 2025
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    Verified Purchase
    Shanna
    Dallas, US
    ★★★★★ 5
    Functional + Sexy
    Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
    Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 13, 2026
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    Verified Purchase
    ClairY
    Lake Worth, US
    ★★★★★ 5
    Finally!
    Size: X-Large, Color: All Black D (5-pack)
    Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 17, 2026

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