034Motorsport X-Brace Billet Aluminum Chassis Reinforcement For B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5 - 034-603-0008

034Motorsport presents the Billet Aluminum X-Brace Chassis Reinforcement for B8/B8.5 Audi models, including the A4/S4/RS4, A5/S5/RS5, and Q5/SQ5. This upgrade replaces the factory stamped steel subframe brace with a robust billet aluminum component to enhance steering precision and handling performance. By significantly reducing chassis flex, the X-Brace maintains suspension geometry under load, delivering a sharper and more consistent steering feel.

Features:

• Constructed from T6-6061 Billet Aluminum, CNC-machined in-house
• Clear anodized for long-lasting durability
• Direct replacement for the factory subframe brace, increasing rigidity
• Enhances handling dynamics and improves steering response
• Compatible with both B8 (Pre-Facelift) & B8.5 (Facelift) models
• Simple, reversible installation with no additional NVH

Included Components:

• X-Brace Chassis Reinforcement
• Modular Inserts (2)
• Assembly Screws (Set of 4)
• Undercarriage Tray Mounting Screws & Washers (Set of 4)

Fitment:
Compatible with LHD (Left-Hand Drive) Models Only, excluding Cabriolet:

• Audi A4/A4 Quattro (2009 - 2016)
• Audi S4 (2010 - 2016)
• Audi RS4 (2013 - 2016)
• Audi A5 (2008 - 2017)
• Audi S5 (2008 - 2017)
• Audi RS5 (2013 - 2015)
• Audi Q5/SQ5 (2009 - 2017)

Note:

• Not compatible with RHD or Cabriolet models.
• RS5 models may experience limited belly pan mounting points.

OEM Replacements:

• Part Numbers: 8T1 399 345J / 8K1 399 345E

For optimal installation, we recommend using new factory stretch bolts (sold separately).