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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
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Description
ST Suspension X Coilover System - BMW F3X (AWD)Suspension Techniques (ST) Coilovers are made by KW, the leading brand worldwide for height adjustable coilover systems. The ST coilover is identical in valving and technology as that of the KW Variant 1, only difference is the galvanized steel casing, opposed to the stainless steel casing of its "big brother" KW. 1. 2 2. 8"F, 1. 2 2. 0"R Complete solution with adjustable spring plate, race spring system and bumpers with dust protection Powerful twin
Suspension Techniques (ST) Coilovers are made by KW, the leading brand worldwide for height adjustable coilover systems. The ST coilover is identical in valving and technology as that of the KW Variant 1, only difference is the galvanized steel casing, opposed to the stainless steel casing of its "big brother" KW.- 1.2-2.8"F, 1.2-2.0"R
- Complete solution with adjustable spring plate, race spring system and bumpers with dust protection
- Powerful twin-tube dampers with high-quality components for maximum longevity
5 Year Limited Warranty to original purchaser.
Founded in the early 80's in southern California, ST has a reputation for creating innovative coilovers and suspension products from quality materials using modern manufacturing and engineering techniques. ST Suspensions offers streamlined performance products at excellent value to automotive enthusiasts. ST works in conjunction with their parent company KW Automotive, giving their suspension products the extra edge in design, engineering, and performance.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
74 monte carlo Resto
Model: NewSLS50_52
Great product easy installation with sheets cut to size,using for Classic car Restoration,floor pan and doors
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Impressive Sound Deadening Solution with Enhanced Audio Quality
Model: NewSLS50_52
I recently purchased the Siless 50 mil (1.3mm) 52 sqft Car Sound Deadening mat, and I am delighted with the results it has delivered. Right from the start, I was impressed with the packaging, which ensured the product arrived in perfect condition.
One of the standout features of this sound deadening mat is its ease of use. It was a breeze to cut and modify according to my specific needs. Whether I needed to cover specific areas or customize the size, the mat accommodated my requirements effortlessly. This flexibility made the installation process a breeze.
The Siless Sound Deadening mat has proven to be highly effective in reducing outside noise within my vehicle. With just a half cabin install, I noticed a significant reduction of approximately 10 decibels, making my driving experience much quieter and more comfortable. The mat acted as a reliable barrier against external noise, allowing me to enjoy a more peaceful ride.
Furthermore, the sound quality from my vehicle's audio system experienced a noticeable improvement. The Siless mat effectively dampened vibrations and minimized resonance, resulting in cleaner and more refined audio output. The mat's thickness of 50 mil (1.3mm) ensures optimal sound absorption, contributing to its effectiveness in creating a quieter and more enjoyable driving environment. I can now appreciate the full range of tones and enjoy a more immersive music experience during my drives.
Overall, I highly recommend the Siless 50 mil Car Sound Deadening mat for anyone seeking a reliable and effective solution to reduce noise and enhance audio quality in their vehicle. The easy cutting and modifying process, along with the excellent packaging, contribute to a seamless installation experience. With a significant reduction in outside noise and an improvement in sound system performance, this sound deadening mat has exceeded my expectations.
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Reviewed in the United States on May 27, 2023
★★★★★ 5
Good quality sound deadener at a good price.
Model: NewSLS50_52
Quality sound deadening that adheres to body panels well. You can easily hear the vibration reduction after just the first piece by tapping on the body panel before and after.
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Reviewed in the United States on November 21, 2025
★★★★★ 4
Good stuff at a good price
Model: NewSLS50_52
Works well and sticks well. I used a roller and it has been over a year and everything still sticking as good as day i put it everywhere. I didnt use any adhesive but I did wipe everything down with acetone before I applied. Good stuff at a good price
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Reviewed in the United States on November 23, 2025
★★★★★ 5
Good value
Model: NewSLS50_52, Model: NewSLS50_52
Working perfectly. Install of stereo equipment and carpet left me wanting some heat and sound resistant materials.
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Reviewed in the United States on March 23, 2026
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