SKU: 86025440983

ST Suspension XTA Height Rebound Adjustable Coilover Kit w/Top Mounts for BMW E9XM3 wElectronic Damper Control

Sale price$742.05 Regular price$824.50
Save 10%

Pay in installments of $206.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

ST Suspension XTA Height Rebound Adjustable Coilover Kit w/Top Mounts for BMW E9XM3 wElectronic Damper ControlFor those who demand the absolute best performance comes the ST XTA coilover. The full driving behavior of your car can be adjusted using KW damper technology along with an adjustable aluminum uniball top mount for fine tuning of the camber and caster! Performance driving in mind ST XTA coilovers feature KW damping technology which allows the suspension to be made either stiffer or softer depending on the driving conditions. This damping adjustment is

For those who demand the absolute best performance comes the ST XTA coilover. The full driving behavior of your car can be adjusted using KW damper technology along with an adjustable aluminum uniball top mount for fine-tuning of the camber and caster!

Performance driving in mind
ST XTA coilovers feature KW damping technology which allows the suspension to be made either stiffer or softer depending on the driving conditions. This damping adjustment is made on the upper end of the chromed piston rod allowing the setup to be changed almost instantly. If the rebound force is increased, the car will drive with more track stability and reduced bodyroll. If the rebound force is decreased, the car will feel more comfortable when on the move. For increased performance, the ST XTA features an aluminum adjustable topmount allowing the camber and caster to be adjusted depending on your driving needs or vehicle setup.

Easy lowering adjustment
Like all ST coilovers the lowering adjustment is made via a continuous thread on the galvanized strut. This even allows the lowering to be made when the kit is installed by turning the spring plate higher or lower! NOTE: The lowering of each vehicle differs greatly with ST XTA coilovers due to the type of construction. For example, older vehicles such as the Honda Civic (EJ9) can be lowered between 40-75mm with ST XTA coilovers, while newer models such as the Audi S3 (8P) can be lowered between 10-40mm due to being much lower from the factory.

KW Engineering: Exclusive for ST suspension
The high-quality ST XTA coilover is based on the twin-tube damping principle of low friction combined with pressure-resistant damper housings. Manufactured directly at KW, a mono block guide and seal package reduces the friction of the damper as well as protecting it against corrosion and dirt. Each galvanized strut is sealed multiple times to ensure maximum longevity in ALL weather conditions.

  • Latest damping technology for maximum longevity
  • Reduced system friction for effective damping adjustment
  • Individual lowering within the TUV-tested adjustment range
  • Front and rear axle (when possible) with thread adjustment
  • Galvanized coilover struts with additional coating for an optimized corrosion protection
  • Complete solution with adjustable spring plate, race spring system and bumpers with dust protection
  • Aluminum adjustable uniball top mounts (when possible)
  • Scaled camber adjustment (optionally also caster)
  • Externally adjustable damping

ADVANTAGES OF A ST COILOVER SPRING STRUT:

  • ST Suspensions - Spring Strut Construction
  • Excellent all around performance, provides a balance between performance and comfort for everyday use
  • High-quality components for long durability
  • Use of twin-tube technology, independent reactions from damping inputs minimized chassis vibrations and increase driving dynamics
  • Coilovers come with all necessary components, vehicle-specific certificate and insallation instructions

 

Functional principle of twin tube shock absorbers
With a Twin-Tube shock absorber, the piston works inside of an inner Tube. The space between the inner tube and the casing is used as an equalization chamber. Changes in volume due position of the piston rod change the oil level in the equalization chamber between the outer casing and inner Tube.

Compression phase:
When the car swings downwards in the direction to the road, the piston rod is moved downwards.The oil displaced by the piston rod is pressed into the equalization chamber between the Tubes via specially designed orifices in the compression valve at the lower end of the inner Tube. The resistance that is created through this valve creates the actual compression forces. Oil underneath the piston also flows upwards through the piston check valve with low resistance which also influences the damper characteristics.

Rebound phase:
When the car swings upwards, away from the road, the shock absorber is extended. The piston rod is extending outward from the housing. The rebound phase valve at the lower Tube resists the oil that flows downwards through the holes in the space above the Tube. Therefore the upward motion is slowed down. When the piston rod is pulled out of the case, its volume is balanced out by the oil that flows from the equalization chamber back into the inner tube through the compression check valve.



Functional principle of mono tube shock absorbers
With a one-piston shock absorber, the piston works directly in the damping case. Both, traction and also compression phase valve are integrated into the piston at the end of the piston rod. Depending on the velocity with which the shock absorber is compressed or extended, the forces rise. A characteristic is the separating piston that separates the oil from the gas space which is under strong pressure. The gas space balances the oil expansion with temperature differences and volume changes while the piston rod retracts. The separating piston thereby moves upwards and downwards. The gas pressure of 25-30 bar in the separating space is necessary in order to support the damping forces in direction of the pressure direction.

Compression phase:
When the car swings downwards in the direction to the road, the piston rod is moved downwards. The compression phase valve on the top of the valve resists the oil that streams upwards through holes. Therefore, the downward movement is slowed down. The separating piston is thereby lowered by the same degree as the piston retreats downwards. The gas pressure underneath the separating piston thereby prevents the oils from foaming above the piston.

Rebound phase:
When the car swings upwards, away from the road, the shock absorber is extended. Thereby, the piston rod is moving out of the damping case. The rebound phase valve at the lower piston resists the oil that flows downwards through the holes in the space above the piston. Therefore the upward motion is slowed down. The separating piston is thereby lifted upwards by the same degree as the piston extends.

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: 86025440983

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 10 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Camila
Boise, US
★★★★★ 4
came out great and works well, my puppies just too smart and gets all the food within 1 minute lol
Color: Blue
came out great and works well, my puppies just too smart and gets all the food within 1 minute lol. if you have a smart dog it wont keep them busy for long!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
R
Verified Purchase
Robyn Simmons
Charlottesville, US
★★★★★ 5
Fantastic Mental Stimulation for My Dog!
Color: Higher Level-Navy A
I am absolutely loving the Dog Puzzle Toy! It’s such a great way to keep my dog mentally engaged and entertained. The concept is simple—just put treats into the puzzle slots—and it provides hours of fun as my dog works to figure out how to get to the treats. It’s amazing to see how much focus and problem-solving skills he’s using! The toy is sturdy, and the slots are easy to fill. I love that it’s adjustable, so I can make it a bit more challenging as my dog gets better at it. It’s also made from durable, pet-safe material, which gives me peace of mind knowing it’s not only fun but also safe. My dog seems to really enjoy it, and I can tell that it’s helping with his mental stimulation. It’s a great alternative to traditional chew toys, and I’ve noticed a positive difference in his behavior and energy level. Pros: Great mental stimulation for dogs Easy to use—just add treats Adjustable difficulty level Durable and pet-safe material Keeps dogs entertained for longer periods Cons: None so far! This toy is perfect for keeping my dog entertained while giving his brain a workout. I highly recommend it for anyone looking to challenge their pet in a fun and rewarding way!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2025
H
Verified Purchase
Haley
Natrona Heights, US
★★★★★ 3
Interactive. Triggers more of dogs minds
Color: Higher Level-Navy A
My dog had a bit of a time figuring out how it works but she loves it now. Put lil pieces of bacon in the holes and she finds it all well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
M
Verified Purchase
Mindhealer
Cuba, US
★★★★★ 5
Please read!
Color: Higher Level-Navy A
The design is adorable and I love the little bones and paw prints they put on the tabs. They are easy to slide and the colors are bright and admirable. There is different difficulty levels. The yellow circles are more on the easy side. The red ones are a bit more harder if you have a more intelligent dog. The three white tabs in the middle move in a 360 circle, there is one missing so you can slide the red tab in to hide the treats. I use my dog's kibble as treats; the kibble pellets are 1cm in length and 1cm in width. I can fit about 2 pellets in each tab hole, there are 14 small holes which you can hide the treats in total. Cleaning the puzzle It depends if you wash it by hand or put it in the dishwasher. I do both but I prefer the dishwasher because it is a little hard to clean by hand since there is so many nooks and crannies on the toy. Of course, it is dishwasher safe and I recommend putting it in by itself because you don't want to cross-contaminate the dog slobber to be on your dishes. I wouldn't put crushed or wet dog food in it because it could get in the sliding rails and jam it up or get moldy. If you are going to dry the toy, open all the tabs so they are exposed. If you cannot, that's okay. My dog's opinion I have two dogs, a 2-year-old chocolate Labrador named Maggie and a 7-year-old labradoodle named Rufio, Maggie takes about 1 or 2 minutes to finish the puzzle because she is super energetic. Rufio takes 3 or 4 minutes because he is calmer; but sometimes I have to help him just a little bit. It is suitable for all dog ages and I recommend it if your dog (s) are annoying you. They both love it and I give it to them for mental stimulation and as a reward. The bottom has "non-slip pads", but if I'm being honest they actually don't work that well. My dogs just slide it around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
J
Verified Purchase
JavaJunkie
Boise, US
★★★★★ 5
Great design!
Color: Higher Level-Navy A
This Joansan Dog Puzzle Toy is exactly what I was looking for. My little MinPin is a worker and he likes having a job to do. I purchased this to entertain him when rolling his treat ball all over the place isn't practical. This disc has a non slip bottom and it's actually fairly heavy. It doesn't slide easily. So my little worker usually ends up picking it up and transporting it to different locations throughout the house. Obviously, individual results will vary, depending on size, personality, and breed of the dog using it, but it's been great for my lil guy. He gets a little physical and mental exercise. It's sturdy enough to withstand his scratching and chewing. My big dog likes it too. The size is perfect for food oriented cats too. My cat is too lazy to work for his food though. So he wasn't interested in it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 6, 2025

recommand products