BMW 1 Series F20 (2011-2019) Rear Lower Chassis Bar / Subframe Brace / Tie Bar – Ultra Racing Underbody Brace, Chassis Reinforcement & Handling Upgrade

Transform the way your BMW F20 drives

Unlock sharper handling, greater confidence and serious chassis rigidity with this Ultra Racing rear lower chassis bar for the BMW 1 Series F20. A precision underbody reinforcement that tightens up the rear end, it delivers the planted feel keen drivers want for fast road and track day use.

Why enthusiasts choose this rear underbody brace

• Big step-up in rigidity with a stiffness gain of 40 percent or more for a more connected drive
• Cuts understeer and improves rear-end support for cleaner corner exits
• Flatter cornering with reduced body movement and crisper turn-in
• Enhanced braking stability and mid-corner confidence
• Greater safety and comfort due to a more controlled chassis

Built for performance and longevity

• Material: lightweight carbon steel for strength without unnecessary mass
• Finish: pure solid white for a clean, OE-plus look
• Engineered by Ultra Racing, a global leader in chassis bracing since 2002
• Lifetime limited warranty against manufacturing defects

Real-world results you can feel

We have fitted and used this Ultra Racing rear lower chassis bar on customer cars and feedback is consistently excellent. Expect more rear-end stability, better grip over uneven surfaces and a tighter, more precise feel through rapid direction changes.

Perfect upgrade for

• BMW 1 Series F20 owners seeking a handling upgrade without compromising everyday usability
• Fast road driving where stability, grip and confidence matter
• Track day enthusiasts wanting predictable balance and improved corner speed

Also searched as

Rear lower chassis bar, rear subframe brace, rear lower tie bar, rear underbody brace, chassis reinforcement bar, suspension bracing, handling upgrade for BMW F20, BMW 1 Series F20 chassis stiffening.

Fitting

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

About Ultra Racing

Since 2002, Ultra Racing has specialised in precision chassis reinforcement including strut bars, fender bars, subframe bracing and more. Trusted worldwide by enthusiasts for strength, durability and proven handling gains.