Control arm bushings play a key role in connecting the wheels to the chassis of the vehicle. Tasked with keeping suspension geometry in check while absorbing noise, vibration, and harshness (NVH) factory rubber bushings were engineered to provide a balance of comfort and control. As a factory bushing ages, it becomes brittle and begins to harden. When this happens the bushing will actually shrink and allow excess play in the suspension joint. This is typically felt by a sudden jerk forward after the car comes to a stop and is a leading cause of "sloppy" or "loose" suspension feel. By replacing the bushing with a full polyurethane unit or using a bushing insert, this play is eliminated since the suspension joint is being supported by a much stiffer material that will not harden or shrink over time. Additionally, the inherent stiffness of the urethane material translates body forces much more directly. This means steering inputs from the driver are effectively transferred to the wheels and vital road information is transmitted properly from the wheels to the driver.

Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved steering feel, turn in, more responsive handling and overall improved chassis composure with Powerflex performance polyurethane control arm bushings.

Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

This part fits the following BMWs:
1998 - 2004 E39 Touring 525i 528i 540i
1996 - 2004 E39 Sedan 525i 528i 530i 540i 
2000 - 2004 E52 Z8 Roadster

The Stage 1 Suspension System system consists of a set of performance tuned springs and carefully matched Koni adjustable front strut assemblies and rear shocks. The system provides superior handling through increased grip and reduction of body roll while maintaining a nicely dampened ride. The modestly lower ride height gives the car a tastefully enhanced performance look as well as improving suspension geometry. 

This item fits the following BMWs: 
1996-1999 E36 BMW M3 Sedan and Coupe

Looking for coilovers that will provide reliability on street driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

BR Series coilovers are the most popular and versatile option offered by BC racing, offering features such as 30-level dampening adjustment (simultaneous compression and rebound control), linear springs where possible, and a minimum of 2 inches ride height drop. To ensure performance, comfort, and quality, all BR Series kits are Dyno tested during the design stage to determine the best valving and spring rates, then installed and tested for a minimum of 6 months. This kit features mounts and brackets that are fully compatible with all stock mounting points and components.

The upper shock/strut mounts are all constructed of 6061-T6 Aluminum for strength and weight savings. BC Racing design 1 of 3 types of upper mounts for each vehicle: Caster/Camber Plates (+/- 3* camber), Camber Plates (+/- 3* camber), and Rubber Mount Plates (NVH reduction). The included mount option for this kit is shown in the kit specs and features below.

Lower shock mounts are powder coated for corrosion protection and constructed of either 6061-T6 aluminum that has been milled from a single piece (fork or bolt eye mount) or of STKM13C steel with all brackets welded robotically.

The included springs come in one of 3 styles: linear, S-barrel, and V-barrel. Linear springs are used in most applications unless limited by the OE design that does not allow the use of linear springs. All spring options are made from SAE9254 steel and have a zinc coating applied under the powder coating for increased spring corrosion protection and long term reliability.

All shock bodies used in the BR Series coilovers use a 53mm shock body (unless noted otherwise) for added strength, performance, and increased fluid capacity. All shocks are then powder coated black chrome for clean styling and corrosion protection.

Specs and Features:

• 7k Front & 14k Rear Spring Rate
• Linear front & Linear rear springs
• Valved specifically to spring style and rate
• Camber Plate Front Mounts
• Rubber Rear Mounts
• Black Powder Coated Components
• All OE style brackets and mounting for perfect fit
• 30 Levels of Simultaneous Compression and Rebound Dampening
• 2 inch minimum and 3+ Inches of total potential drop
• Great for Track, Street, and any other conditions

Eliminate the most common sources of suspension slop with our all new Turner Suspension Refresh Kits that feature only OEM parts! We do not include any "cheap parts" in our refresh kits to ensure long-lasting reliability and noise-free suspension.

This Level 1 kit replaces:

Rear Reinforcement Plates
Rear Shock Mounts & Gaskets
Trailing Arm Bushings
Sway Bar End Links
Hardware

Dinan Performance Springs are matched to your BMW's chassis and suspension components to deliver better handling and looks without sacrificing ride quality. Dinan BMW springs are carefully engineered to work within your car's suspension travel and to improve suspension geometry. Spring rates are slightly stiffer than stock and dialed in to reduce bodyroll. A stiffer suspension makes the car more fun to drive and the lower ride height improves the looks by reducing wheel-fender gap.

Dinan spring specs -

• F: -1/2" (12mm)
  
• R: -0.0" (0mm)

Fitment note: When used with stock shocks the Dinan Ride Quality Kit is strongly recommended. The Kit consists of shorter and stiffer bump stops and spring perches that work better with the lowered ride height of these springs. While not explicitly required, less than favorable ride quality and handling may result without them.

For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere. The springs are worth 2 points towards your Dinan badge (Ride Quality Kit is worth 1 point).

This item fits the following BMWs:
2007-2011 E90 BMW 335i - Sedan

Hotchkis Sport Suspension products have been developed with strength, reliability, fitment, appearance, and durability all factored into their products to ensure that customers are never left unsatisfied. Suspension components are exposed to not only the elements, but also constant ever changing forces that will push the limits of any performance component to its breaking point if not built to a superior quality. This is especially true in vehicles with lowered suspension. Make sure your suspension is ready for any abuse thrown its way with Hotchkis Performance Sway Bars.

Performance sway bars allow you to take corners aggressively while still keeping the wheels firmly planted and reducing body roll, all without reducing overall ride quality. Hotchkis sway bars feature powder coated tubular steel construction for maximum durability and stiffness. Every kit includes the essential components needed for an easy installation and to ensure you get the most from your sway bars.

Features:

• Front Sway Bar Diameter: 33.4mm
• Rear Sway Bar Diameter: 25.4mm
• Crisper And Quicker Turn-In
• Reduced Body Roll
• Increased Traction And Stability
• Balanced Sport Handling
• Grease-able Polyurethane Bushings
• Powder Coated For Durability
• Tested And Tuned For Best Performance
• Easy Installation

Fits the following BMWs:
1992-1999 E36 BMW All submodels

Eliminate the most common sources of suspension slop with our all new Turner Suspension Refresh Kits that feature only OEM parts! We do not include any "cheap parts" in our refresh kits to ensure long-lasting reliability and noise-free suspension.

This Level 2 kit replaces:

Subframe Bushings
Shock Mounts
Diff Bushings
Control Arms & Bushings
Sway Bar End Links
Hardware

These Koni shocks and struts have been specially built to match the spring rate and lowering for Dinan Performance springs. They are similar to a standard Koni Sport Yellow shocks but the valving and length has been adjusted to go with the Dinan springs. These are a two-way adjustable shock, allowing you to pick an optimum setting for the driving you're doing.

For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere.

This item fits the following BMWs:
1999-2003 E39 BMW M5

Suspension Techniques Thicker Sway Bars

Enhance your BMW's cornering performance with Suspension Techniques' thicker sway bars. Designed to reduce body roll and keep your wheels firmly planted on the pavement, these sway bars allow for more aggressive cornering without sacrificing ride quality. With all necessary hardware and instructions included, upgrading your suspension is made easy.

• Improve cornering performance
• Reduce body roll
• Maintain ride quality
• Keep wheels firmly planted
• Includes all necessary hardware and instructions

Bilstein has teamed up with Eibach to offer matched shock and spring packages. These Eibach springs are mated to a special set of Bilstein shocks to deliver a sporty and taut ride with as little impact on ride comfort as possible.

The Pro Kit uses an Eibach Pro Kit spring with Bilstein's Sport shocks and struts. Instead of taking parts from different manufacturers, Bilstein has tested the performance of the Eibach spring and tailored their shocks to be a true match for the new spring rate and ride height. This is known as a matched shock and spring and very few tuning companies take these extra steps. Eibach springs tend to be softer overall than most other aftermarket springs, which ensures the ride stays close to a stock comfort while still giving you a lowered stance and improved handling. 

Bilstein B12 Features: 

• Precise response and excellent driving performance
• Springs and shocks road tested and fine-tuned to complement one another
• Bilstein Monotube/Inverted gas pressure technology
• TUV certified
• Made In Germany
• Average Lowering of 25 to 40mm

Most cars don't need coil overs to improve their handling and bodyroll. For most drivers, simply replacing the shocks and springs with performance versions will meet their goals. If your shocks need replacing, and you felt the handling could be improved a little bit, this is an excellent performance suspension for you.

This item fits the following BMWs:
1999-2002 Z3 BMW Coupe 2.8L 3.0L