ST Suspension XTA Plus 3 Coilover Kit BMW E90 E92 M3

The ST XTA Plus 3 Coilover Kit is the highest-spec suspension upgrade in the ST range, engineered specifically for the E9X M3. Developed in partnership with KW Automotive, the XTA Plus 3 brings three-way adjustable damping(rebound, low-speed compression and high-speed compression) along with motorsport-grade aluminium camber-adjustable top mounts, giving S65 M3 owners exceptional chassis control and alignment flexibility.

Perfect for fast-road and track-day setups, this suspension kit offers KW-derived performance at an exceptional value point, making it one of the most capable and versatile coilovers available for the E90/E92/E93 M3.

Key Features

• Three-way adjustable damping:
  – Independent rebound adjustment
  – Low-speed compression adjustment
  – High-speed compression adjustment

• Aluminium camber-adjustable top mounts included

• Height adjustment front and rear

• Monotube dampers for consistent performance under heat

• KW-derived damping technology in a more affordable package

• Sharper steering response and greater camber stability

• Progressive springs for balanced fast-road behaviour

• Ideal for semi-slick tyres and track use

• TÜV-certified lowering range

Compatibility

BMW E9X M3 – 4.0 V8 (S65)

• E90 M3 Saloon

• E92 M3 Coupé

• E93 M3 Convertible

(Designed exclusively for S65 M3 models.)

Ideal For

• Fast-road drivers wanting meaningful chassis improvement with full damping adjustability

• Track-day enthusiasts who need finer control over compression settings

• Cars running high-grip tyres or increased power

• Drivers seeking sharper turn-in, better camber control and improved mid-corner stability

• Owners wanting motorsport-grade adjustability without stepping up to full KW Clubsport/V4 systems

Why Choose the ST XTA Plus 3 Coilover Kit

The XTA Plus 3 delivers KW-influenced damping performance at a more accessible price point, making it one of the strongest value-for-money coilover options for the E9X M3. Three-way adjustment allows you to fine-tune how the car behaves over bumps (high-speed compression), through weight transfer (low-speed compression), and as it settles mid-corner (rebound).

The supplied camber-adjustable top mounts improve initial steering bite and tyre contact patch control — essential for fast-road and track setups. With durable construction and a proven monotube design, the XTA Plus 3 offers consistency even during long, high-heat driving sessions.

For S65 owners wanting a serious handling upgrade that sits between KW V3 and Clubsport systems, the XTA Plus 3 is an outstanding choice.

Installing / Notes

• Professional installation, alignment and corner balancing are highly recommended

• Motorsport top mounts may increase NVH compared to OEM mounts

• Check wheel/tyre clearance when using aggressive camber settings

• All adjusters remain easily accessible once fitted