SKU: 56380177573

ZX4-XTR4 - XT/Race Rigid 4 Pad

$523.35 $581.50
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

ZX4-XTR4 - XT/Race Rigid 4 PadSpecifications: XT Race Rigid 4 Pad Clutch Kit Item Description: XT Race Rigid 4 Pad Product Weight (lbs.): 30. 5 Torque Capacity (ft lbs.): 681 Torque Capacity Over OE: 129% Disc Material: Ceramic Clutch Disc Diameter (Inches): 9. 4 Clutch Disc Diameter (Millimeters): 240 Input Shaft Diameter (inches): 1 Pressure Plate Type: Xtreme Flywheel Type: Prolite Warranty: 12 Months (view details) Description: The ZX4 XTR4 kit is designed for the most

Specifications: XT/Race Rigid 4 Pad Clutch Kit

  • Item Description: XT/Race Rigid 4 Pad
  • Product Weight (lbs.): 30.5
  • Torque Capacity (ft/lbs.): 681
  • Torque Capacity Over OE: 129%
  • Disc Material: Ceramic
  • Clutch Disc Diameter (Inches): 9.4
  • Clutch Disc Diameter (Millimeters): 240
  • Input Shaft Diameter (inches): 1
  • Pressure Plate Type: Xtreme
  • Flywheel Type: Prolite
  • Warranty: 12 Months (view details)

Description: The ZX4-XTR4 kit is designed for the most demanding drivers seeking optimal performance. Featuring an Xtreme pressure plate, ACT's advanced technology increases clamp load, reduces deflection, and maximizes clutch life. Each diaphragm undergoes a four-stage heat-treating process for exceptional performance and durability. Precision cover stampings ensure rigidity and consistency.

This kit includes ACT's 4-pad rigid race discs crafted with high-quality ceramic friction materials. The chrome-moly hub is heat-treated for enhanced strength and durability. The lightweight, rigid design enables quicker shifts and trouble-free service. While engagement is harsher with the 4-pad rigid race disc, shifting is significantly faster. This disc is well-suited for smaller disc sizes in smaller engines.

Key Characteristics:

  • Feel: Moderate to heavy 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, using select ceramic friction materials for high heat tolerance and maximum performance.

Recommended Use: Recommended for race use only, ideal for drivers seeking uncompromising performance on the track.

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

Vehicle Fitment: Compatible with various Mazda models, including the 2006-2013 Mazda 3 Mazdaspeed and the 2006-2007 Mazda 6 Mazdaspeed equipped with the 2.3 L4 GAS FI 2260cc | DOHC 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: 56380177573

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Z's_Mom
Louisville, US
★★★★★ 5
Superior Quality & Effective
Size: 90 Count (Pack of 1)
Thorne Magnesium is a total game changer! The quality is exceptional, and it has finally helped me get the restful sleep I've been missing. I’ve struggled with insomnia and tried numerous other brands to no avail, but Thorne is truly superior. It is absolutely worth the investment for results that actually work.
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Reviewed in the United States on April 29, 2026
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Liset lopez
Draper, US
★★★★★ 5
Recommend
Size: 90 Count (Pack of 1)
Excellent quality supplement. Easy on the stomach and helps with relaxation and sleep. You can really feel the difference. Highly recommend!
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Reviewed in the United States on May 3, 2026
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Amazon Customer
Waukegan, US
★★★★★ 5
Beneficial Sleep Benefits
Size: 90 Count (Pack of 1)
I have just started taking this item and it seems to work. My sleep is better, deeper and I awaken feeling rested. I strongly hope that this item will continue giving me great sleep results! The Magnesium is very beneficial too. I would recommend this supplement! I will purchase again provided it keeps working!!
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Reviewed in the United States on May 25, 2026
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lateforthetrain
New York, US
★★★★★ 4
Reliable
Size: 90 Count (Pack of 1)
The brand has a good reputation. I prefer to order products with the Thorne brand than others, because of its reputation. The magnesium by Thorne is well worth the price. It is reputable and for sleep it works well. Other health benefits are included so not just for sleep but overall health. Good product.
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Reviewed in the United States on May 28, 2026
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Diana E
Whiting, US
★★★★★ 5
Great brand great quality
Size: 90 Count (Pack of 1)
I bought this supplement during my pregnancy and absolutely love the quality of Thor supplements. It mainly contains magnesium and I highly recommend this brand. They use the purest ingredients and the effects are truly impressive. Since magnesium can cause side effects I was pleased to find this one didn’t have any for me.
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Reviewed in the United States on May 4, 2026

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