034Motorsport Billet Aluminum X-Brace


    • 28 $
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Replace the factory flimsy subframe brace with the 034Motorsport Billet Aluminum X-Brace to increase torsional rigidity of your Audi B8/8.5 chassis. Improving steering feel and increasing handling performance by eliminating chassis flex, the 034Motorsport Billet Aluminum X-Brace is made in the USA using T6-6061 Aircraft Specification Billet Aluminum. The X-Brace was engineered to outperform the stock welded stamped steel part ensuring consistent suspension geometry.

The X-Brace is a direct bolt on upgrade and requires new stretch bolts for installation. We provide new stretch bolts for your convenience

  • T6-6061 Billet Aluminum Construction
  • CNC-Machined In-House in the USA
  • Clear Anodized Finish for Durability
  • Engineered to Replace Factory Front Subframe Brace
  • Reduces Chassis Flex in Cornering
  • Enhances Handling Dynamics & Performance
  • Consistent Precise Steering Feel
  • Modular Design Fits Both B8 (Pre-Facelift) & B8.5 (Facelift) Models
What’s Included:
  • 034Motorsport Billet Aluminum X-Brace Chassis Reinforcement (Fits B8/B8.5 Audi A4/S4, A5/S5/RS5, Q5/SQ5)
  • Modular X-Brace Inserts (Set of 2)
  • M10 X-Brace Assembly Screws (Set of 4)
  • M5 Undercarriage Tray Mounting Screws (Set of 4)
  • 15mm Undercarriage Tray Mounting Washers (Set of 4)
  • 2009 – 2016 Audi A4 (B8/B8.5)
  • 2010 – 2016 Audi Allroad (B8/B8.5)
  • 2010 – 2017 Audi S4 (B8/B8.5)
  • 2008 – 2017 Audi A5 (B8/B8.5)
    • All LHD Models Except Cabriolet
  • 2008 – 2017 Audi S5 (B8/B8.5)
    • All LHD Models Except Cabriolet
  • 2013 – 2017 Audi RS5 (B8/B8.5)
    • All LHD Models Except Cabriolet
  • 2008 – 2017 Audi Q5/SQ5 (B8/B8.5)
  • 8T1 399 345J
  • 8K1 399 345E
Please Note:
  • Fits LHD (Left-Hand-Drive) Vehicles Only. Does Not Fit RHD (Right-Hand-Drive) Vehicles.
  • Does Not Fit Cabriolet.
  • The X-Brace will fit the Audi RS5, however, due to a variation in the belly pan, it will block some mounting points for the plastic shield.
  • We recommend using new factory stretch bolts to install the X-Brace. Complete factory bolt kits are sold optionally.
    • B8 (Pre-Facelift) X-Brace Bolt Kit
    • B8.5 (Facelift) X-Brace Bolt Kit 

Additional information

Weight 30 lbs
Dimensions 24 × 12 × 12 in


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