Whiteline Rear Trailing Arm Front Bushing Kit (RTAB) - BMW 3 Series E46 & Z4 E89 - Rear Control Arm Front Mount Bush / Trailing Link Bush / Rear Axle Bush - Toe Alignment & Handling Upgrade

Give your BMW rear end the precision it deserves. This Whiteline rear trailing link front mount bush kit is a proven upgrade for E46 3 Series and Z4 E89 owners who want tighter handling, better stability and a more connected drive. By limiting unwanted movement at the front pivot of the rear trailing arm, it helps keep toe and camber consistent under load for confident cornering and improved traction.

Perfect for fast road use and track days, as well as a high quality refresh on a daily driver, this suspension bush kit targets the key compliance point on the rear axle. The result is sharper response on turn in, greater stability through mid corner bumps and more predictable behaviour under braking and acceleration.

• Whiteline engineering for crisp rear axle control
• Reduces bushing deflection to help maintain alignment under load
• Enhances steering feedback and rear end stability
• Supports even tyre wear by minimising geometry change
• Direct-fit replacement for the front mounting of the rear trailing link
• Ideal handling upgrade for BMW E46 3-Series and BMW Z4 E89

Customers love the transformation this simple change delivers, and our own experience fitting these has shown consistent improvements in balance and confidence without compromising everyday comfort.

Fitment

BMW 3-Series E46 and BMW Z4 E89, front position of the rear trailing arm on the lower mount. Please verify compatibility with your specific chassis before ordering.

Why choose this bush kit

If you are searching for rear control arm bush upgrades, rear trailing link bushes, rear arm mounts, chassis bush kits or alignment bushes for BMW E46 or Z4 E89, this Whiteline kit delivers the rear axle precision, stability and control enthusiasts look for. It is an excellent solution for correcting vague rear end feel, improving toe control and getting more confidence on fast B roads and track.

Installation

Professional installation is recommended. For fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Keywords customers use: rear link bush kit, rear control arm mount, rear axle bush upgrade, trailing link front mount, BMW E46 suspension upgrade, Z4 E89 handling upgrade, performance bushes, rear toe control, alignment bush set, suspension refresh.