BMW M135I (F20 & F21) Suspension

Shop BMW M135i F20/F21 suspension upgrades for road and track use, including coilovers, springs, top mounts and supporting chassis hardware. This collection concerns the F20/F21 generation, not the later front-wheel-drive-platform F40 M135i.

Nitron R1 and R3 for the M135i

Compare Nitron NTR R1 F20/F21 coilovers with NTR R3 three-way suspension. R1 combines compression and rebound through one adjuster; R3 separates rebound, low-speed compression and high-speed compression.

Confirm the exact drivetrain, original electronic-damper equipment, mounting arrangement and selected spring specification. A model name or shared collection tag does not establish every xDrive or adaptive-damper application.

Choose the complete chassis specification

Browse the wider collection for alternatives from BC Racing, Eibach, Millway and other listed brands. Product inclusion is not a guarantee that all components can be fitted together: check top-mount, rear-arm and drop-link compatibility with the chosen damper.

Establish usable travel, tyre clearance and ride height before completing alignment. Choose extra damping controls when they will be used in a measured setup process, rather than assuming they automatically improve the car.

View the Nitron suspension directory for exact M/non-M and generation-specific applications. Confirm the current build lead time before arranging installation.