BMW Springs

• GERMAN-MADE
• DIRECT REPLACEMENT
• LIFETIME WARRANTY!
• BUY A PAIR FOR THE PRICE OF FACTORY SINGLE!

The rear springs on the 2001-2006 E46 M3 models have a chronic broken spring problem. If it hasn't happened to you yet it will. Springs are nothing more than exposed steel and they rust easily. After a while a section of the spring actually breaks off.

A broken spring is very dangerous - the spring is no longer mounted correctly in the suspension and it cannot support the weight of the car, especially when cornering. The ride also suffers as the suspension is no longer able to absorb the bumps and impacts from the road. Aside from a visual inspection of the spring itself you might notice a clunking sound or banging noise coming from the front or rear. An inspection of the noise should also include other related items in the suspension: bushings, ball joints, links, mounts, etc. We also recommend replacing the rubber spring pads on the top and bottom of the spring because they lose their shape over time.

The factory BMW springs sell for $140+ each. We sold and replaced enough while working in New England that we were able to get a strong grasp of the issue and come up with our own springs that are an improvement over the factory springs in every way. These springs are made in Germany using high grade spring steel that is then shot-peened for longer life and powder-coated for protection. These are the same height as the stock replacement BMW springs which makes them a direct replacement.

Replaces Coupe models only.

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

ECS E90 xDrive Lowering Spring Set Transform your E90’s handling and stance with our specially designed ECS Lowering Springs. Built to enhance both cornering capability and ride comfort, these springs provide a balanced drop between 1.0"-1.3", giving your vehicle a sportier profile while keeping a smooth, OEM-like ride. Experience a lower center of gravity for improved stability, enhanced steering feedback, and a sleek look that reduces unsightly wheel gap for a true performance appearance.

Why Choose ECS Lowering Springs?

Better Handling and Stability: By lowering the center of gravity, these springs reduce body roll and improve road grip, delivering precise control through corners. Performance-Driven Design: Linear spring rates tuned for sporty responsiveness without sacrificing comfort, making them ideal for daily driving. Durability You Can Trust: Finished with a flat black powder coating for excellent corrosion resistance, so they look great and last. Specifications

Lowering Range: Front 1.0"-1.2", Rear 1.2"-1.3" Spring Rate: Front 505 lbs/in, Rear 854 lbs/in Ideal for Daily Drivers and Enthusiasts: With rates slightly above factory specs, ECS Lowering Springs provide improved handling without the harshness typical of coilovers, making them perfect for drivers seeking a more refined, performance-focused setup. Take it a step further by adding wheel spacers to achieve the ultimate stance—browse our wide selection of options for the E90 xDrive to complete your suspension overhaul!

ECS Performance Rear Trailing Arm Set Say goodbye to suspension flex and unwanted geometry changes under load with our Performance Rear Trailing Arms, an upgrade engineered to enhance strength and handling precision. Factory steel trailing arms can flex and even fail under harsh conditions, but these trailing arms are built to stand the test of time. Lightweight, rigid, and built from solid 6061-T6 aluminum, these trailing arms offer improved stability and peace of mind, no matter how demanding the road.

Why Upgrade to ECS Rear Trailing Arms?

Engineered for Strength: Constructed from high-grade 6061-T6 aluminum, anodized for corrosion resistance, these arms are designed to last longer and handle tougher conditions than OEM steel arms. Lightweight and Strong: Each arm is 25% lighter than stock, weighing 384 grams versus the factory 517 grams, reducing unsprung weight for better performance. Easy DIY Installation: Designed to fit seamlessly, these trailing arms won’t alter alignment settings, making them a straightforward upgrade for enthusiasts and home mechanics alike. Enhanced Handling: With virtually no flex, they eliminate unwanted suspension changes, providing a smoother, more controlled ride. Kit Includes

Lowering Spring Set: Front and rear springs with precise lowering specs and premium powder coating. Rear Trailing Arms: A set of solid 6061-T6 aluminum trailing arms, ready for direct replacement, along with all necessary hardware. Bolt Torque Spec: 74 ft-lbs

DIRECT REPLACEMENT

 LIFETIME WARRANTY!

BUY A PAIR FOR THE PRICE OF FACTORY SINGLE! 

The rear springs on the 1999-2005 E46 323i 325i 328i and 330i models have a chronic broken spring problem. If it hasn't happened to you yet it will. Springs are nothing more than exposed steel and they rust easily. After a while a section of the spring actually breaks off.

A broken spring is very dangerous - the spring is no longer mounted correctly in the suspension and it cannot support the weight of the car, especially when cornering. The ride also suffers as the suspension is no longer able to absorb the bumps and impacts from the road. Aside from a visual inspection of the spring itself you might notice a clunking sound or banging noise coming from the front or rear. An inspection of the noise should also include other related items in the suspension: bushings, ball joints, links, mounts, etc. We also recommend replacing the rubber spring pads on the top and bottom of the spring because they lose their shape over time. Check if your car has 5mm or 15mm thick pads.

The factory BMW springs sell for $140+ each. We sold and replaced enough while working in New England that we were able to get a strong grasp of the issue and come up with our own springs that are an improvement over the factory springs in every way. These springs are made in Germany using high grade spring steel that is then shot-peened for longer life and powder-coated for protection. These are the same height as the stock replacement BMW springs which makes them a direct replacement.

Sold only as a pair.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 325i 328i 330i - Sedan