BMW Coilovers for BMW E46 M3 S54 (1999-2005)

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:

• 8k Front & 12k Rear Spring Rate
• Linear front & S-Barrel rear springs
• Valved specifically to spring style and rate
• Camber Plate Front Mounts
• Aluminum and 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

The B16 PSS10 coilovers offer a stiffer spring rate than stock and a lower ride height for less bodyroll and better handling. These are among the easiest coil over kits on the market - no special mounts required (works with stock mounts and sway bar links), larger adjustment knob allows for easy shock damping changes, and coil over spanner wrenches included for easy height changes. Bilstein backs up their technology with a limited lifetime warranty. TUV approved for fitment, safety, and quality!

Bilstein's monotube shock dampers in the PSS10 offer 10 precise settings for compression and rebound. A new setting is just a click away, allowing you to set a ride and handling combination that works for your setting. Instead of offering too many shock settings that you're never going to use, Bilstein has chosen ten optimal damping curves from a smooth street setting (P10) to an ultra-stiff track-only setup (P1). Shock changes are made from an easy-to-use over-sized adjuster knob.

Ride height adjustments are done from perches that ride on each shock body, which are zinc coated for excellent wear and corrosion resistance. You can set the ride height between 0.5 to 1.3 inches lower than stock ride height. Springs are progressively rated so their initial compression rating is quite soft and then becomes stiffer as the spring compresses. These are stiffer than most coil over kit manufacturers and the results of Bilstein's extensive testing on the German Nurgburgring and Autobahn.

The fitment of these is just like a standard shock and spring package. The front struts and rear shocks are compatible with the stock strut and shock mounts. You can re-use your own or choose a mount with additional features. Because the Bilstein design keeps the sway bar tab in the original location, you can re-use the stock sway bar links. Using the stock mounts keeps the cost and complexity down and allows for TUV certification. You can also be assured of the stock mount's quiet and long-lasting performance. The assembly of the front strut is the same as a the factory strut. In the rear, ride height is made by an adjustable spring perch that sits under the rear spring. Install instructions and diagrams included.

If you're looking for a supremely capable and high quality suspension, then look no further than the Bilstein PSS10. It combines all of the best German engineering with real-world development, and a lifetime warranty.

Fitment note: this system works only on cars not equipped with the factory EDC electronically adjustable shocks.

Featuring:

• Largest available piston diameter for greater sensitivity and precise control.
• Patented digressive piston head design and deflective valving instantly reacts to changing road conditions.
• 10-way adjustable dampening knobs that "click" from soft to hard with no tools or jacking required.
• Monotube design dissipates heat more effectively than a twin tube shock for cooler, more efficient operation and longer life.
• Weather resistant coating to resist oxidization, and ensure long life.
• Lighter weight reduces wear and tear on suspension components.
• Wrenches to adjust front and rear ride height included!

This item fits the following BMWs:
2001-2006 E46 BMW M3