Ultra Racing Underbody Centre/Center Brace (Mid Chassis Lower Bar) for BMW 1 Series F20 – Lower Tie Bar, Subframe/Crossmember Brace

Underbody Centre Brace for BMW 1 Series F20

Transform the way your BMW 1 Series F20 steers, turns and stops with this underbody centre brace. This precision chassis reinforcement ties the middle of the car together, reducing flex in the floorpan and crossmember area to give you crisper steering feel, flatter cornering and a more planted, confidence-inspiring drive on fast road or track.

If you are chasing tighter turn-in, stronger stability through sweeping bends and a more consistent suspension geometry under load, this lower chassis bar is the upgrade that delivers. We have fitted these in-house and the feedback from our customers is outstanding, noting a cleaner brake pedal response, less push on the limit and a more composed rear end over uneven surfaces.

Why choose this centre underbody brace

• Increases torsional rigidity for the F20 platform, helping the front and rear subframes work together
• Cuts unwanted flex that can lead to vague steering and mid-corner corrections
• Flatter cornering with reduced roll and a more neutral balance
• Improved brake feel thanks to more stable suspension pick-up points
• Ideal for fast-road, track-day and spirited driving while remaining civil for daily use

Construction and finish

• Material: lightweight carbon steel for high strength without unnecessary weight
• Finish: pure solid white powder coat for a clean OE-plus look and corrosion resistance
• Vehicle-specific design for the BMW 1 Series F20 chassis for an accurate fit
• Genuine Ultra Racing product with lifetime limited warranty against manufacturing defects

Fitment

Designed specifically for the BMW 1 Series F20 chassis. Perfect as a subframe reinforcement, lower tie bar or mid-chassis lower bar solution to complement coilovers, uprated anti-roll bars and performance tyres.

Installation and support

Professional fitting recommended. For installation by specialists, book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.

Who is it for

Owners seeking a serious handling upgrade on their BMW 1 Series F20, whether for B-road blasts, track use or simply to tighten up an ageing chassis. This undercarriage brace is a smart first step in any handling package.

Key search terms

BMW F20 chassis brace, 1 Series F20 underbody brace, lower tie bar, centre floor brace, crossmember reinforcement, subframe brace, lower arm bar, chassis stiffening bar, handling upgrade, track-day suspension bracing.

Order today for a noticeable improvement in control, precision and driver confidence from your BMW 1 Series F20.