Features:

Threaded collars allow easy and precise front & rear vehicle height adjustments
Spring rates are nearly 50% stiffer in front and 10% stiffer in the rear
Substantial reduction in body roll
Included suspension packers allow adjustment of bump-stop clearance to fine-tune handling and comfort
Dinan-spec progressive bump stops improve ride quality at lowered ride heights
Components are machined from 6061-T6 aluminum and black anodized for a sporty appearance as well as corrosion protection
Stock upper spring mounts are utilized for quiet operation
Designed and manufactured in the USA
With 35 years of experience working with BMWs Dinan can be rightfully called a serious tuning company. Dinan offers second-to-none performance solutions for the whole range of BMW models. Well-balanced performance systems are available for each BMW model in order to meet a broad range of performance requirements and budgets. Serious car enthusiasts turn to Dinan because they appreciate their ability to make performance upgrades that outperform the rest of the aftermarket industry. If performance is what you’re craving for, Dinan is the name to trust: if there is a specific upgrade that you have in mind, chances are high that Dinan has got the right parts to do it.

Features:

100% Made in Germany
Fine tune lowering to what you want
Increased safety

Recognizing a demand for premium suspension components tuned for the street—with race car features like adjustable lowering—H&R engineers rose to the challenge. Received in the market with great success, H&R Coil Overs feature an innovative mono-tube gas shock construction. Using premium quality materials, H&R engineers fine-tune each coil over shock with a progressive rate spring to ensure better handling and premium ride comfort. Each vehicle specific coil over has a fully threaded, custom shock—allowing for adjustable vehicle height. Vehicle lowering is altered using easy to adjust spring seats. Adjustable lowering accommodates summer and winter conditions and allows you to dial in the perfect ride height to fit your personal style. H&R coil overs are designed for performance, comfort, and durability using only the best components. For those drivers looking for refined suspension and a little German style, look no further than our diverse range of coil over applications.

Features:

Set of 4 complete coilover assemblies for the front and rear of your vehicle
Latest damping technology for maximum longevity
Reduced system friction for effective damping adjustment
Individual lowering within the TÜV-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
Aluminium adjustable uniball top mounts (when possible)
Scaled camber adjustment (optionally also caster)
Externally adjustable damping
5-year warranty on coilovers, 2-year warranty on anti-sway bars
Manufactured in the United States

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 even more track stability and further 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 aluminium adjustable topmount allowing the camber and caster to be adjusted depending on your driving needs or vehicle setup.

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 even 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.