Simple Suspension Solutions
Engineered for racers who demand control, durability, and unmatched handling—every lap, every time.
Built for the Track. Tuned for the Street.
Street & Track Approved Performance
At S3 Suspension, we create coilovers that strike the perfect balance between track performance and everyday comfort. Whether you're carving through canyons, hitting weekend track days, or just enjoying the daily drive, our suspension systems are built to keep up.
Simple Bolt-In Installation
Each coilover system is designed as a direct bolt-in solution, offering peak performance on-track while maintaining comfort for everyday street use.
Precision-Built In-House
Every system is handcrafted at our Southern California facility in Fullerton, CA using proprietary components sourced from top-tier manufacturers, ensuring exceptional reliability and performance.
Proven by Racers & Enthusiasts
Our coilovers are rigorously tested both on the street and at the track by real drivers to guarantee optimal performance, comfort, and durability.
Experience the balance of street comfort and track-ready capability—only with S3 Suspension.
Premium springs shouldn’t be an upgrade.
Swift Springs Come Standard
Every S3 Suspension coilover system comes standard with Swift Springs, selected to complement each chassis and damper setup. Known for their lightweight construction, consistent spring rates, and exceptional stroke, Swift Springs help deliver predictable handling without sacrificing ride quality.
By pairing our dampers with Swift Springs from the start, every S3 system is built to provide the response, control, and consistency we expect.
No upgrade required. No added cost. Swift Springs are standard on every S3 coilover system.
2-Way Competition Coilovers
Engineered for serious performance. Built for competitive edge. Reserve yours today and be the first to experience the next level of suspension.
Limited application list.
Made To order ETA: 5-8 Week Build Time.
Recent Product Reviews
What Our Customers Are Saying
"I’m really impressed"
I recently installed the S3 coilovers on my BMW M2 Competition, and I’m really impressed with how they’ve transformed the car. If you’re on the fence about upgrading your suspension, here’s my take after using them for a few months.
Dean D. US
BMW M2 Comp
"The best bang for the buck"
A few months ago, I installed the S3 ST Spec coilovers on my BMW E92 M3, and I’m really impressed with how they’ve transformed the car. If you’re on the fence about upgrading your suspension, it was the best bang for the buck with no regrets!
Shawn P. Los Angeles, US
BMW E92 M3
"It lives up to the hype!"
My close friends recommended S3 and I fell in love! First impression was the excellent build quality and easily adjustable spring perches. ... It's a quality product and, for the price, can't be beat!
James T. - TX, US
CIVIC EG
"Well Worth it!"
Finding a solid quality track spec coilover sub $2k is difficult. I went with S3 as I've heard nothing but positive things. Kevin was able to answer any tech and warranty questions I had. I went ahead and sent it on a track spec set up for my MR-S!
Vin C. - GA, US
"These coilovers felt great on track!"
There was a huge improvement in cornering. It handled the chicanes and high speed corners very well. Sub2Club here I come!
Jacob L. - CA, US
"I am impressed!"
"I was in the market for a set of suspension that can help suit my daily/weekend warrior. With high praise from the track community in SoCal, I landed on S3 and I am impressed! Car is comfy on the street and handles the track nicely with the dampers turned up. For those interested in suspension that can handle track abuse and still drive street well, S3 is for you."
Felipe T. - CA, US
"These coilovers are definitely worth considering."
I recently installed the S3 coilovers on my 1996 Honda Civic EK, and I have to say, I’m pretty impressed with them. If you're looking for an affordable upgrade to improve both handling and appearance, these coilovers are definitely worth considering.
Francisco S. - WA, US
HONDA CIVIC EK
"it was a night and day difference"
S3 coilovers are the perfect mix of track and street performance. I installed these on my Civic over my previous (more expensive!) coilover setup and it was a night and day difference in control and stability on track! You really can't beat this setup, talk about bang-for-buck!
Cory B. - AZ, US
"Love it so much"
My BMW F80 M3 has never felt so refined. Turn in and corner feels much better with less body roll. It absorbs the bumps/dips during my canyon and track use leaving me more confident in the handling of my car!
Jerry S. -LA, US
BMW F80 M3
"Highly recommended!"
"I never thought my Tesla would be considered a track car but I decided to take a chance. I settled on S3 due to the price point and had low expectations. Boy was I wrong! These coilovers turned my car into an absolute track BEAST! Highly recommended!"
Chase D. - FL, US
TESLA MODEL 3
