Powerflex Polyurethane Front Anti Roll Bar Bushes 23.6mm for BMW F20 F21 F30 F31 F32 F33 F34 F36 xDrive (Road Series) - Fits M135iX, 335iX, 340iX, 440iX - OEM 31356792138 - Pair

Uprated Sway Bar Mount Bushings 23.6 mm for BMW F-Series xDrive

Transform the front-end feel of your BMW with these Powerflex Road Series ARB mount bushes in 23.6 mm. Built from a performance poly compound that is approximately 60% stiffer than tired factory rubber, this upgrade tightens steering response, curbs body roll and gives you a more planted, confidence-inspiring drive on daily and fast-road use.

Ideal as a direct replacement for worn stabiliser bar mounts on xDrive models, these bushes fit the 23.6 mm front roll bar and are supplied as a pair. We have fitted these on our own cars and for customers, and the feedback is consistently positive for sharper turn-in, improved grip through bends and long-lasting durability.

Why this upgrade works

• Approx. 60% stiffer than OE rubber to limit unwanted movement at the sway bar mounts
• Reduces roll, enhances steering precision and helps maintain consistent alignment under load
• Road Series compound designed for comfort with a clear handling advantage
• Direct-fit for 23.6 mm front bar diameter on eligible F-series xDrive platforms
• Durable, low-maintenance solution that outlasts standard bushes

What you receive

• 2 x 23.6 mm front ARB mount bushes

Sold as a pair for the front stabiliser bar.

Vehicle applications

• BMW 1 Series F20 F21 (2010–2015)
  • M135i xDrive
• BMW 1 Series F20 F21 LCI (2014–2018)
  • M135i xDrive
• BMW 3 Series F30 (2011–2016)
  • 320i xDrive
• BMW 3 Series F31 (2011–2016)
  • 330d xDrive, 335d xDrive, 335i xDrive
• BMW 3 Series F31 LCI (2014–2018)
  • 330d xDrive, 335d xDrive, 340i xDrive
• BMW 3 Series F34 GT (2012–2016)
  • 330d xDrive, 335d xDrive, 335i xDrive
• BMW 3 Series F34 GT LCI (2015–2019)
  • 330d xDrive, 335d xDrive, 340i xDrive
• BMW 4 Series F33 F36 (2013–2017)
  • 435d xDrive, 440i xDrive
• BMW 4 Series F32 F33 F36 LCI (2016–2018)
  • 430d xDrive, 435d xDrive, 440i xDrive

Technical details

• Location: Front stabiliser bar mounts
• Bar size: 23.6 mm
• Series: Road Series
• OE reference: 31356792138
• Brand: Powerflex

Fitment check

To ensure you receive the correct 23.6 mm front stabiliser mount bushes, add your UK registration or the last 7 digits of your VIN at checkout and we will confirm compatibility before dispatch.

Professional installation

Want them fitting for you? MJ Modifications in Warwickshire can install these bushes and carry out geometry checks. Request a quote: info@mjmodifications.co.uk.

Why buy from us

Genuine parts, expert advice and proven results. Customers love the tighter front-end feel, better road holding and reduced roll after this simple upgrade. A great-value handling mod for xDrive F-series owners.

Search-friendly terms

BMW F-series xDrive sway bar bushings 23.6 mm, front stabiliser bar mount bush, ARB bushes BMW 1 Series 3 Series 4 Series AWD, M135i xDrive roll bar bush, 335i xDrive 340i xDrive 440i xDrive front sway bar mounts, uprated poly bushes BMW F20 F21 F30 F31 F32 F33 F34 F36, OE cross reference 31356792138, Road Series ARB bushing upgrade, front axle stabiliser mount replacement.