Ultra Racing BMW Front Lower Brace 1 Series

Front underbody chassis bar for F-series handling and stability

Transform steering feel and cornering confidence with this front lower arm reinforcement bar. A proven chassis upgrade for fast road and track day use, it tightens up the front end, reduces flex and gives more precise turn in. Expect a more planted front axle, improved mid-corner stability and better feedback on British B-roads and motorways alike.

Why enthusiasts choose this chassis upgrade

• Sharper steering response and more accurate front-end geometry under load
• Reduces chassis flex for flatter, more predictable cornering
• Direct-fit to factory mounting points for a straightforward install
• Works brilliantly with stock dampers, lowering springs or coilovers
• Ideal for fast road setups and occasional track days

Real-world results

We run this bar on customer cars and in our own builds. Feedback is consistently positive, with owners reporting crisper turn in, more confidence on sweeping bends and a more connected feel at the wheel. It is one of the best-value chassis stiffening mods you can do on these platforms.

Vehicle coverage (2010+)

Designed for the F-series platform across multiple models:

• F20 F21 1 Series including M135i and M140i
• F22 F23 F87 2 Series including M235i and M240i
• F30 F31 F34 F80 3 Series including 335i and 340i
• F32 F33 F36 F82 F83 4 Series including 435i and 440i

Installation and fitting support

Bolt-on fit using existing locations. For professional installation, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Perfect for searchers looking for

F20 F21 lower arm bar, front subframe brace, F22 chassis brace, F30 underbody brace, F32 front reinforcement, M135i handling upgrade, M140i chassis bar, M235i front stiffener, M240i lower brace, 335i 340i front chassis bar, 435i 440i handling kit, F-series bracing, fast road suspension mods, track day chassis upgrade.