SKU: 20305650051

ZM5-HDG4 - HD/Race Sprung 4 Pad

$272.25 $302.50
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

ZM5-HDG4 - HD/Race Sprung 4 PadSpecifications: HD Race Sprung 6 Pad Clutch Kit Item Description: HD Race Sprung 6 Pad Product Weight (lbs.): 13. 9 Torque Capacity (ft lbs.): 359 Torque Capacity Over OE: 71% Disc Material: Ceramic Clutch Disc Diameter (Inches): 8. 8 Clutch Disc Diameter (Millimeters): 224 Input Shaft Diameter (inches): 0. 9375 Pressure Plate Type: Heavy Duty Warranty: 12 Months Description: The ZM5 HDG6 kit by ACT features their most popular Heavy Duty pressure

Specifications: HD/Race Sprung 6 Pad Clutch Kit

  • Item Description: HD/Race Sprung 6 Pad
  • Product Weight (lbs.): 13.9
  • Torque Capacity (ft/lbs.): 359
  • Torque Capacity Over OE: 71%
  • Disc Material: Ceramic
  • Clutch Disc Diameter (Inches): 8.8
  • Clutch Disc Diameter (Millimeters): 224
  • Input Shaft Diameter (inches): 0.9375
  • Pressure Plate Type: Heavy Duty
  • Warranty: 12 Months

Description: The ZM5-HDG6 kit by ACT features their most popular Heavy Duty pressure plate paired with a 6-pad, spring-centered race disc. ACT Heavy Duty pressure plates utilize an exclusive diaphragm design to enhance clamp load, diminish deflection, and optimize clutch life. Each diaphragm undergoes a four-stage heat-treating process for exceptional performance. Precision cover stampings ensure rigidity and consistency.

ACT's 6-pad, spring-centered race disc incorporates a spring-center to effectively damp torsional vibrations and resist failure under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide enhanced spring support, reduce stress concentrations, and increase strength and reliability. While engagement with the 6-pad, spring-centered race disc is harsher, shifting is faster. This disc is particularly recommended for larger clutch sizes to absorb more heat.

Key Characteristics:

  • Feel: Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle.
  • Life: Moderate friction life, extended by ACT's exclusive diaphragm design.
  • Quality: Carefully engineered, precisely assembled, accurately balanced, using select ceramic friction materials for high heat tolerance and maximum performance.

Recommended Use: Recommended for high horsepower street or race use, ideal for applications where durability, aggressive engagement, and high performance are essential.

ACT Difference: 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability.

Vehicle Fitment: Compatible with various Mazda MX-5 Miata models from 2006 to 2015, equipped with the 2.0 L4 GAS FI 2000cc engine.

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: 20305650051

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4.6 ★★★★★
Based on 206 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 1
Too damn small
Color: Black
Way too small for an adult. It doesn't even fit my 11 year old. Unfortunately I didn't open it immediately or I would have returned it. Now I'm stuck with something nobody in my house can use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
O
Verified Purchase
OBG
Draper, US
★★★★★ 3
One size definitely doesn’t fit. Otherwise Ok.
Color: Black
OSFM - one size fits most. It should be OSFS - one size fits small/some. Measured my head size and according to their chart I’m l/XL. This cap is tight fitting and gives you a headache after an hour. Otherwise it’s fine. Keeps your head cool, is absorbent and works well under a helmet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 21, 2025
G
Verified Purchase
GET SOME!
Los Angeles, US
★★★★★ 5
Feels refreshing on the head…
Color: Black
I purchased a few of these on UA application. However, when I decided to put some more the UA app was out of stock. I love the skull caps!! I use them for the gym and for work. They’re very comfortable and outstanding if you’re in a hot environment, sweat a lot or just want to be cooler. They haven’t slipped at all and it’s great value for what I spent! So far I have seven in total. I may purchase three more shortly before summer hits that way I can use one at the gym and one at work per day and don’t have to worry about doing my laundry just to have clean skull caps.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2026
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
The perfect sock!
Size: 6-10, Color: Halo Gray/Assorted
The only socks that I can wear with my hey dudes. They stay on my ankles and never slid down into the shoe. I will forever order these as long as they are available. They are comfy too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2025
R
Verified Purchase
Ryan S
Port Orchard, US
★★★★★ 5
Good option, especially in warmer weather
Size: 6-10, Color: Black
High quality socks and very durable. Nice touch adding the grip on the back of the ankle so the sock stays up. Size is a true fit to the size of your foot as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2025

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