SKU: 57098071885

HKS x Studie Coilovers with Error Canceller 21+ BMW G8X

$1732.50 $1925.00
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Description

HKS x Studie Coilovers with Error Canceller 21+ BMW G8XHKSTUDIE is a collaboration product between HKS and Studie AG. Fits 2WD & 4WD BMW M3 G80 M4 G82 Features: Balancing high speed stability and comfort for city driving The G8X generation M has electrically adjustable dampers as stock, and while they provide the stability typical characteristics of the M series at high speeds, they still are a bit stiff in daily driving, even in "COMFORT" mode. The HKSTUDIE SUSPENSION was developed based on the concept

HKSTUDIE is a collaboration product between HKS and Studie AG.
Fits 2WD & 4WD BMW M3 G80 / M4 G82

Features:

Balancing high speed stability and comfort for city driving
- The G8X generation M has electrically adjustable dampers as stock, and while they provide the stability typical characteristics of the M series at high speeds, they still are a bit stiff in daily driving, even in "COMFORT" mode. The HKSTUDIE SUSPENSION was developed based on the concept of "Balancing high speed stability and comfort for city driving".

High rigidity inverted dampers are used
- The mono-tube dampers are equipped, which enables the use of a large-diameter piston and provides high-quality and stable damping force. In addition, high rigidity inverted dampers are used for the front suspension, as the strut type suspension system is subject to heavy bending loads during acceleration, deceleration and cornering. This leads to excellent handling.

Fully-threaded shock body
- Fully-threaded shock body is adopted for both front and rear, allowing adjustment to the desired ride height without affecting ride comfort by changing the amount of damper retraction stroke or spring pre-load. Wheel gap between the front tire and fender is noticeably big with the stock ride height, so we set the front end slightly lower relative to the rear to obtain a more stylish appearance and improve high-speed driving stability.

The 30-level damping force adjustment
- The 30-level damping force adjustment allows the driver to set the preferred damping force to suit various driving conditions, from city driving to the race track. You will experience the evolved "The Ultimate Driving Machine" by having balanced performance of smooth ride on the street and a steady driving feel at high speed, perfect for the M series.

Features the camber-adjustable top hat
- The front unit features the camber-adjustable spherical-bearing top hats for sharp handling. CNC machined aluminum top hats are adopted for the rear unit.

3-year/60,000 km product warranty
- By manufacturing in-house at our factory in Japan and conducting thorough quality control, we are able to offer a 3-year/60,000 km product warranty coverage from the time of purchase. We also offer overhaul and customization services after use. In addition, we can change the spring rate of the front springs for free at the time of product order.

Details:
- Front Camber-adjustable Spherical-bearing Top Hats
- Rear CNC Machined Aluminum Top Hats
- Suspension Error Canceler
- Front Damping Force Adjustment Dial
- Rear Damping Force Adjustment Dial
- Dual PVS - As a general characteristic of piston valves, damping force is less effective at low piston speeds and increases at higher speeds. The Dual PVS (=The dual preload valve system) used in this product improves damping force at low speeds and suppresses it at high speeds. This results in less thrust and bouncing, and improves tire traction.
- Advanced Bump Rubber - Typical bump stop rubbers are intended to stop the stroke when the suspension bottoms out, but produce a strong impact as well. The advanced bump rubber used in this product is soft and long in shape, allowing the bump rubber to function as a sub-spring by making the bump stop contact earlier. The result is not only a lessening of the impact at bottoms out, but also an increase the overall spring rate at every strokes.

Specifications:
- Spring Rate [N/mm(kgf/mm)]: F=69 (7.0) / R=137 (14.0)
- Spring Length (mm): F=200 (Straight) R=250 (Straight)
- Default Ride Height (mm) ?Upper / Lower Limit): F=-18 (-3 / -40) / R=-9 (0 / -36)
- Upper Mount: F=Spherical Bearing / R=Spherical Bearing

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: 57098071885

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4.7 ★★★★★
Based on 14 reviews
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Product Reviews
C
Computer
Omaha, US
★★★★★ 4
Easy to assemble, does the job, material is shiny nylon and shows creases, minor defects, sloppy
Size: 3 Panel 12FT W, Size: 3 Panel 12FT W
The Siebwin room divider is a good idea, and for the price, it mostly delivers on the intended functionality. I ordered the 12 foot, 3-panel version mainly to hide an unfinished basement storage area that had become an eyesore. It works well for that purpose and gives the space a cleaner appearance without spending the kind of money that more decorative dividers or custom partitions cost. If you need something temporary, portable, or mainly functional, this is a viable option. There are a few limitations that became obvious during setup and use. The first thing I noticed was that the weld quality on some of the metal poles is fairly sloppy. Once the cover is installed, you do not really see it, but up close, it does not look especially refined or professional. The blackout material also is not a matte canvas style fabric as I expected. It has more of a shiny nylon appearance, and the creases are fairly visible. Being that it’s more of a nylon, I’d be hesitant to try steaming it to remove the creases. However, the creases do not matter if you are using it in a basement, dorm, or shared room, but for photography, video work, or a professional office setting, the appearance could be disappointing. The fabric is thick enough, though. It blocks visibility well enough, but strong light behind it still shows through to some extent, nothing deal-breaking. Also, my fabric appeared to be slightly defective. The hook and loop strip on one of the bottom sections was off-center and couldn't be totally attached because it was lined up with one of the legs. I originally hoped to use this as a video backdrop, but I will probably end up replacing the fabric with a proper green screen or canvas material while continuing to use the frame itself. For now, it does a good job of covering my basement junk. Assembly was actually easier than I expected and took roughly 15 to 20 minutes. The longer vertical poles are tethered together similarly to tent poles, which made setup straightforward and fairly intuitive. The shorter horizontal pieces slide and snap together to the top and bottom of the vertical assembly. After each section is assembled, the divider panels connect together with metal plates and two knurled screws (at the top and bottom), so no tools are really required. A few screws were difficult to start because paint had gotten into the threads, but once they caught, they tightened down normally. The feet install with similar knurled fasteners and help keep the divider reasonably stable. One thing to watch for during setup is the fabric orientation. There is one arrow indicator in the middle of the fabric to indicate up. However, if you need another indicator, the smaller hook and loop strip goes on the bottom while the longer strip goes on top. I realized mine was upside down right before finishing and had to redo it. I wasn't difficult to redo, despite the defect in mine. The overall design is practical and easy to move around. I do like that the panels can fold and bend into different shapes depending on the space. The widened feet help stability, although when trying to stretch the fabric tight, I noticed the poles sometimes wanted to overlap slightly at the joints. Tightening everything helped somewhat, but it still happened occasionally. The divider feels adequate for normal indoor use, though I would not expect premium durability or luxury-level fit and finish at this price point. The entire device can also be easily disabled and stored in a tote if you need it completely out of the way. It comes with assembly instructions, but even if you didn’t have them, it’s easy to build without them (save a mistake or two). In terms of value, I think the Siebwin divider mostly matches its price. Around $100 gets you a large freestanding partition with decent usability and easy assembly, but there are compromises in materials, appearance, and refinement. The defects are also off-putting, but hopefully you won't have them. Higher-end room dividers can easily cost two or three times more, so some of the tradeoffs are expected. I also noticed cheaper alternatives online, but based on the quality here, I suspect those would probably have even more issues. For practical home use, temporary privacy, hiding storage areas, or separating shared spaces, this is a good option as long as expectations stay realistic.
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Reviewed in the United States on May 18, 2026
T
Trendy Tales
Fort Morgan, US
★★★★★ 3
Works well but takes up more space than expected
Size: 2 Panel 8FT W, Size: 2 Panel 8FT W
This room divider does the job for creating a little extra privacy and was easy enough to set up. The panels feel decent quality and the wider feet help keep it more stable than some cheaper screens I’ve tried. My only issue is that it takes up a bit more room than I expected, especially with the feet sticking out. It’s still portable and folds away nicely, but definitely measure your space first. Overall it works well for separating a room or blocking off an area temporarily. i wish it came in other colors
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Reviewed in the United States on May 26, 2026
K
Katrina Rhodes
Los Angeles, US
★★★★★ 5
Nice divider, serves it's purpose well!
Size: 3 Panel 12FT W
This room divider worked out very well for what I needed. I wanted a simple way to create a little more privacy and separation in a larger room without doing anything permanent, and this divider was an easy solution. The panels provide good coverage, and the black color gives it a clean, modern appearance that blends in nicely with different décor styles. Assembly was fairly straightforward, and once set up, the wider feet helped keep the divider stable on the floor. I was especially happy with how flexible the panels are to arrange. You can keep it mostly straight, angle it around furniture, or create a more enclosed private space depending on the layout you need. The material allows light to filter through slightly while still offering a noticeable sense of privacy. I’ve used it for separating a workspace area, but it would also work well in bedrooms, apartments, dorms, studios, or shared living spaces. Another plus is that it can be folded and moved without too much effort when you want to change the setup. Overall, this divider delivers a good balance of functionality, portability, and appearance. It’s a practical option for anyone needing temporary room separation without installing permanent walls or curtains.
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Reviewed in the United States on May 26, 2026
J
Jamie K.
Grantham, US
★★★★★ 5
Perfect for Adding Privacy to a Piano Studio
Size: 2 Panel 8FT W, Size: 2 Panel 8FT W
I Ordered the 2 Panel version which is way too big for my needs... that's on me. So keep in mind that the picture shows a fabric made for two panels only being used on one and hence it is not pulled tight; it would pull tight and not be so wrinkly if it was set up properly as two panels. The metal pools that make up the panels seem to be well made, stable, and of good quality. They were very easy to put together and they stand up tall with plenty of height. The appearance of it with the fabric on it isn't as elegant as it could be, but it still looks good enough. The material is plenty solid, not allowing light through it, and thereby making a solid barrier. I am using it to block the view out the studio door when a student is sitting at the piano to avoid distractions from the hallway. It will allow a student to enter the studio with our distracting the student who is at the piano.
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Reviewed in the United States on May 18, 2026
J
Just Me
Bozeman, US
★★★★★ 5
Room Divider That Gives Instant “This Is a Separate Space Now” Energy
Size: 3 Panel 12FT W
The Siebwin 3 Panel Folding Privacy Screen is surprisingly effective at changing the feel of a room without requiring construction, commitment, or somebody yelling about load bearing walls. The 12 foot width gives a substantial amount of coverage, making it useful for creating privacy, dividing open areas, blocking visual clutter, or setting up temporary sections within larger rooms. This saved us a ton of time and money in our new studio and enabled us to create a kitchen and office in one room. The wider feet make a huge difference because flimsy room dividers that collapse every time someone exhales too aggressively are deeply annoying. This one feels more stable and grounded once positioned. The folding design makes it easy to move around or adjust depending on the space, and it folds down relatively compactly when not in use. It is basically the introvert curtain wall of dreams. The material has a clean, neutral look that blends well into different room styles without screaming “temporary office cubicle panic.” It works well for apartments, studios, shared spaces, dressing areas, or simply hiding the mountain of chaos you swear you are going to organize tomorrow. Practical, portable, and refreshingly easy to use without turning setup into a three hour emotional event.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026

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