Ultra Racing Rear Lower Brace for BMW 1 Series F20 (2011-2019) - Rear Lower Arm Bar / Underbody Chassis Brace - Fits 116i 118i 120i 125i M135i M140i - Bolt-On Handling Upgrade

Ultra Racing Rear Subframe Reinforcement for BMW 1 Series F20

Unlock sharper steering, a calmer rear axle and real confidence on B-roads and track with this Ultra Racing under-chassis reinforcement for the BMW 1 Series F20 platform. Designed specifically for 2011–2019 cars including 116i, 118i, 120i, 125i, M135i and M140i, this bolt-on upgrade ties key points across the rear suspension to cut flex and keep geometry stable when you turn in, lean on the brakes or power out of a corner.

Why enthusiasts choose this upgrade

• Noticeably more planted rear end for predictable rotation and superior grip
• Faster, cleaner turn-in with improved mid-corner stability and exit traction
• Reduces body twist over bumps for better composure and driver confidence
• Brilliant fast-road and track-day mod that complements springs, coilovers and anti-roll bars
• Vehicle-specific geometry for the F20 chassis with a simple two-point mounting design
• Direct, bolt-on fit using factory mounting points and hardware where applicable

What it does

By bracing the rear end of the car, this lower control arm reinforcement limits unwanted chassis movement that can make the back of the car feel loose under load. The result is a tighter, more connected drive with enhanced stability in quick direction changes and on uneven surfaces, without sacrificing day-to-day usability.

Real-world feedback

We have installed and used Ultra Racing bracing on customer builds and our own cars. The response is consistently positive: crisper steering, calmer behaviour over rough tarmac and a more confidence-inspiring feel at speed. It is a high-impact handling upgrade that you feel straight away.

Compatibility

BMW 1 Series F20, 2011–2019:

• 116i
• 118i
• 120i
• 125i
• M135i
• M140i

Installation and fitting

Designed for straightforward installation with a direct, bolt-on fit to existing locations. For professional fitting, choose MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Why buy from MJ Modifications

• Specialists in performance parts and chassis reinforcement for BMW platforms
• Hands-on product knowledge and installation experience
• UK-based support with optional fitting at our Warwickshire workshop

Search phrases customers use

BMW F20 rear subframe brace, BMW 1 Series F20 underfloor reinforcement, F20 lower control arm brace, BMW 1 Series rear tie bar, M135i chassis stiffener, M140i rear cross brace, BMW 1 Series suspension bracing, F20 rear anti-flex bar, BMW F20 rear underbody reinforcement, BMW 116i 118i 120i 125i handling upgrade, F20 rear arm reinforcement bar, BMW 1 Series chassis reinforcement kit, bolt-on rear bracing F20, track day handling upgrade BMW F20, BMW 1 Series stability brace, Ultra Racing F20 rear reinforcement.