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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
For Your Every Summer RSVP, with Code: SUMMER15
Description
K-Tuned K2 Pro-Circuit 2Way FK8K2 Pro Circuit 2 Way Coilovers are designed for cars looking to set track records and leave with 1st place finishes. All K2 Pro Circuit 2 Way Coilovers feature 12 way dampening and rebound adjustment. They come with stronger internals to handle all the abuse you can throw at them. Stiffer spring rates and more aggressive valving is set on K2's to keep the car stable in the corners. To make sure they will handle lap after lap we've paired up with Swift
K2 Pro-Circuit 2-Way Coilovers are designed for cars looking to set track records and leave with 1st place finishes. All K2 Pro-Circuit 2 Way Coilovers feature 12 way dampening and rebound adjustment. They come with stronger internals to handle all the abuse you can throw at them. Stiffer spring rates and more aggressive valving is set on K2's to keep the car stable in the corners. To make sure they will handle lap after lap we've paired up with Swift Springs to offer our own custom spring for all K2's. They all feature pillow ball upper mounts including older vehicles with double wishbone suspension.
Our goal was to design a suspension setup that is reliable race coilovers built with the best components. All setups feature adjustable ride height and 12 way dampening and rebound to adapt the ride to your preference. K2 Pro-Circuit 2-Way have remote reservoir and rebound adjustment to further adjust and setup the car to your driving style.
Starting with the strut, we invested a lot of time to ensure that they are both durable and reliable. We start with a durable heat-treated steel piston and needle valve to ensure proper travel and linear compression ratio. The strut body is designed to handle the heat and the life cycle it will be put through. Each strut is filled with proprietary oil that is designed to maintain its viscosity even under increased heat or abuse. The oil will keep its unique properties over the years to maintain that same ride quality. This is crucial to the quality and longevity of the strut. Poor quality suspension setups use cheaper oil that can become frothy, lose its strength and degrade overtime. These inferior suspension systems will lose their fluid movement and/or become too soft. We finish the strut piston with longstanding, high-heat rated double seals that are designed to take abuse without breaking a sweat, literally. No leaking struts here. The strut is the most important part of any suspension system. It determines the ride quality and the overall feel. We do not just use a stiffer spring at the suspension to compensate for a poor quality strut; instead we made sure to start from scratch and build a complete coilover that will differentiate itself from the rest.
Next we pair the struts with a high-tensile strength Swift Spring that is designed to last without sagging or premature wear. Swift Springs have proven themselves to last longest into a race without fatiguing. Springs are tested to ensure there is no coil bind and full range of motion. The high quality strut and dampening allows us to use the proper spring rates needed for each setup that will complement the adjustable dampening rates. Each spring is mounted on adjustable aluminum perches that can be used to adjust preload and travel. Incorporated washer and spacers are in place to keep the system free moving especially on McPherson style struts.
The coilover system is finished with a combination of powder coating, electroplating, and anodizing to give it a great look and protect it. McPherson style struts feature adjustable upper camber plates and pillow ball mounts.
Applications:
- 17 - 21 Civic Type R
Valve:
K2 Race Valve - This is our standard linear valve. Damper will get stiffer as the strut travels through its range of motion. This can give some harshness with very aggressive curbs.
K2 DS1 Valve - This is our hybrid valve. We took some characteristics from the Race Valve and our Digressive Valve to give a good mix of both. The damper is a great option for someone driving their car to the track.
K2 TD1 Valve - This is our Digressive Valve which offers the best overall performance. It will have a stiff lead in and very predictable compression throughout the range of motion. This would be the valve currently used on James Houghton's GLTC TSX and Chris Boesrma's Track MOD Civic.
Note:
Springs rates can be changed +/- 4K (up or down).
Recommended Spring Rates: F-14K / R-12K
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
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Product Reviews
★★★★★ 5
Though a bit lightweight, seems quite well made.
Color: White, Size: King
This duvet looks exactly as shown on the Amazon website. I bought the white/white color and it looks and feels very fresh and fluffy, quite lovely. It appears to be well made with a pretty stitched design. It feels soft and comforting. Though it is not overly thick, my intention is not to use it with a duvet cover but to tuck it between a sheet and thermal blanket with a wool blanket on top. It should function well as insulation on a cold night but also be comfortable on cooling autumn nights without the added wool blanket. I believe it will be very easy to use to use this way, rather than with the hassle of a duvet cover. Also, it will transition well from fall into winter.
I know that it is machine washable. But as I own a HE washer, I do plan to launder it at the laundromat in a larger machine. It so fully covers my king sized bed that I fear it might overwhelm the HE washer. But I do like the generous size.
I am so glad to have found this duvet at a great price. It was absolutely a value.
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Reviewed in the United States on August 4, 2025
★★★★★ 5
Fabulous !
Color: White, Size: Queen
The bedsure comforter is the fluffiest and warmest insert I’ve ever had for my duvet !
Absolutely obsessed with it and for such a great price!
Also super cool that it comes vacuum sealed ! I was so curious how it would arrive!
Love love love, if you’re debating it pull the trigger and buy it!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Quality Comfort
Color: White, Size: King
I think this is the perfect weight. I am a “hot” sleeper and I slept comfortably all night. I was really surprised at the quality of this product at the price I paid. I did not wash it before use because I put a duvet cover on it but the quilted, baffled construction should stand up well to washing as shifting of the fill should be limited. Overall an excellent choice.
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Reviewed in the United States on May 26, 2026
★★★★★ 4
An OK product
Color: White, Size: Queen
Bought this for Summer and it work well as it is light and comfortable however after used for one Summer, it got flat and thinner quickly.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
Great comforter
Color: White, Size: Queen
It’s very soft and warm, but lightweight.
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Reviewed in the United States on May 27, 2026