The Ultimate Chassis Upgrade for the BMW G90 & G99 M5
The CarBahn Signature Suspension System transforms BMW’s newest M5 into a flatter, sharper, more responsive driver’s car through a complete suspension package engineered to work as one system.
The Power Was Never the Problem.
The G90 and G99 M5 deliver astonishing acceleration, but the added mass of the hybrid drivetrain changes the personality of the chassis. Under aggressive driving, body roll, compliance, and weight transfer become more noticeable.
The goal was not to make the car harsh. The goal was to make it feel lighter, more precise, and more like the M car it was meant to be.
Engineered as One Complete System
This is not a random collection of suspension parts. The CarBahn Signature Suspension System combines coilovers, sway bars, end links, monoballs, toe links, and installation accessories into one cohesive package designed to improve body control, steering precision, chassis balance, and rear suspension stability.
Control the Weight
Height adjustable coilovers keep the heavy G90/G99 M5 planted, composed, and responsive during high-speed transitions.
Flatten the Corners
Adjustable sway bars reduce body roll and allow the chassis balance to be fine-tuned for street or track driving.
Eliminate Preload
Heavy-duty adjustable end links help the sway bars operate correctly while offering greater strength than the factory components.
Sharpen Steering
Front monoballs reduce unwanted compliance for more immediate steering response and better suspension geometry under load.
Keep the Rear Planted
Adjustable rear toe links improve stability during hard acceleration, aggressive cornering, and alignment setup.
Designed to Work Together
Every component has a purpose, creating a complete suspension system instead of a pieced-together parts list.
Built to Make 5,400 Pounds Feel Hundreds Lighter
The Signature Suspension System changes the way the M5 responds to the road. Turn-in feels sharper. The chassis stays flatter. The rear feels more settled. At speed, the car remains composed and predictable instead of feeling like it is fighting its own weight.
The result is a G90/G99 M5 that feels more balanced, more connected, and dramatically more confidence-inspiring when the road begins to twist.
Everything Needed for a Complete Chassis Upgrade
Height Adjustable Coilover Kit
Improves body control and lowers the center of gravity with adjustable ride height.
Adjustable Front & Rear Sway Bars
Reduces body roll and allows chassis balance to be tuned to the driver.
Adjustable Front & Rear End Links
Stronger than stock and adjustable to remove sway bar preload.
Front Suspension Monoballs
Reduces bushing compliance for sharper steering and more consistent geometry.
Adjustable Rear Toe Links
Improves rear suspension stability and allows precise alignment adjustment.
Installation Accessories & Hardware
Includes the supporting components needed to complete the full system installation.
A Complete Upgrade Over the Factory Suspension
| Factory G90/G99 M5 | CarBahn Signature Suspension System |
|---|---|
| Noticeable body roll under load | Flatter, more composed cornering |
| Factory ride height | Height adjustable stance and lower center of gravity |
| Fixed sway bar tuning | Adjustable front and rear sway bar balance |
| Factory end links | Heavy-duty adjustable end links |
| Compliant rubber suspension mounts | Precision monoballs for sharper steering response |
| Standard rear toe links | Adjustable rear toe links for improved stability and alignment control |
Height Adjustable Without Losing the Character of the Car
The coilover system allows the G90/G99 M5 to sit lower and respond faster while maintaining the refinement expected from a premium BMW M car.
Maximum Lowering Range
Front: 1.0 in – 1.125 in
Rear: 0.75 in – 0.875 in
The M5, Rebalanced.
The CarBahn Signature Suspension System gives the G90 and G99 M5 the control, precision, and confidence needed to match its incredible power. This is the complete chassis upgrade for drivers who want the newest M5 to feel sharper, flatter, and more connected every time they get behind the wheel.