Ultra Racing Mid Lower Chassis Brace for BMW F-Series 1 Series, 2 Series, 3 Series (F20 F21 F22 F23 F87 F30 F31 F34 F80) - Underbody Side/Centre Lower Bar - Fits M135i M140i M235i M240i 335i 340i M3

Ultra Racing Mid Lower Chassis Brace for BMW F-Series 1 Series, 2 Series, 3 Series (F20 F21 F22 F23 F87 F30 F31 F34 F80) - Underbody Side/Centre Lower Bar - Fits M135i M140i M235i M240i 335i 340i M3

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Ultra Racing BMW 1 Series, 2 Series and 3 Series Mid Lower Brace

Transform the way your BMW handles with the Ultra Racing mid lower brace. This underbody chassis brace is a proven, bolt-on handling upgrade for BMW 1 Series, 2 Series and 3 Series models, engineered to reduce body flex, sharpen steering response and deliver greater stability on fast road and track. If you are searching for a BMW chassis brace, BMW mid lower brace, Ultra Racing side lower bar, undercarriage brace or centre lower bar for F-series BMW, this is the performance suspension brace you want.

We run these braces on our own cars and our customers consistently report more precise turn-in, improved grip over uneven surfaces and a calmer, more connected feel through corners. The Ultra Racing mid lower bar reinforces the centre section of the chassis, stabilising weight transfer front to rear and side to side for confident, predictable handling.

Why choose the Ultra Racing mid lower brace for your BMW

  • Reduces centre chassis flex and twist for a tighter, more rigid feel
  • Sharper steering response and improved cornering stability
  • Helps maintain alignment under load for consistent handling
  • Ideal for fast road, spirited driving and track day use
  • Direct-fit, 2-point brace using factory mounting points
  • Typically uses original nuts and bolts unless supplied with hardware

Technical notes

  • Mounting points: 2
  • Uses original nuts/bolts for mounting unless supplied
  • Designed to stiffen the mid/centre underbody of the chassis

Compatibility (2010+)

This Ultra Racing mid lower brace fits the following BMW platforms and models:

  • BMW 1 Series F20 F21 including M135i and M140i
  • BMW 2 Series F22 F23 F87 including M235i and M240i
  • BMW 3 Series F30 F31 F34 F80 including 335i and 340i

Also commonly searched as: BMW F20 chassis brace, BMW F21 mid lower bar, BMW F22 underbody brace, BMW F23 side lower bar, BMW F87 chassis reinforcement, BMW F30 lower brace, BMW F31 subframe brace, BMW F34 centre brace, BMW F80 M3 lower chassis brace.

How it works

Before fitting mid lower brace: centre chassis flex on uneven roads After fitting mid lower brace: stabilised weight transfer and reduced flex
Before:
On uneven or bumpy roads the centre chassis can flex as weight transfers between the front and rear.
After:
The Ultra Racing side lower bar stabilises weight transfer between front and rear and helps minimise deformation from side impacts.

Ultra Racing mid lower brace for BMW F20 F21 F22 F23 F30 F31 F34 F80

Ideal search terms

Ultra Racing BMW mid lower brace, BMW chassis brace, BMW F20 F21 F22 F23 F30 F31 F34 F80 underbody brace, BMW 1 Series lower brace, BMW 2 Series lower brace, BMW 3 Series lower brace, BMW M135i M140i M235i M240i 335i 340i chassis stiffening, side lower bar, centre lower bar, subframe brace, handling upgrade, suspension brace.

Fitting and support

Professional fitting available at Nforcd in Warwickshire. For a fitting quote or any questions, email Sales@nforcd.com and our team will be happy to help.