ECS Tuning Underbody X-Brace w/ Free Performance Engine Mount Kit (DoorBusters) - Audi S6/S7/RS7

ECS S6 / S7 / RS7 Underbody X-Brace

The stock chassis brace is hollow stamped and welded steel.  Upgrade to ECS Tuning's full 6061-T6 billet aluminum X-Brace.  By reducing torsional flex, our X-Brace substantially stiffens up the chassis by fully bracing the steering rack to the rear portion of the front subframe. This results in improved steering response, accuracy, and feel, along with less slop and better cornering! Our X-brace is designed to work in conjunction with our ECS Streetshields, ES4475699 and ES4355106 so you can completely fortify the underside of your car for maximum protection. 

• Stiffer chassis bracing between the steering rack and rear portion.

• Replaces OEM welded hollow steel x-brace

• 6061-T6 billet aluminum construction

• Utilizes factory mounting locations and installs with factory hardware

• Compatible with ECS Transmission Street Shield or OEM plastic transmission belly pan

• Flatter cornering and sharper handling

• Includes new torque to yield subframe hardware required for install

• No increase in NVH

See the install PDF below for full install instructions. 

ECS Performance Engine Mount Kit - Audi C7 S6/S7/RS7

ECS Tuning performance polyurethane engine mounts offer a more engaging driving experience, with crisper throttle response, a more precise shifter feel, and reduced driveline slop.

Our ECS Tuning performance engine mounts are custom-designed in-house by our industry-leading R&D department. These mounts are the result of countless hours of research and testing to establish the best bushing design to minimize engine vibration, driveline deflection, and increased durability. Our primary goal at ECS Tuning was to achieve a compliant ride while maximizing performance and after thousands of real-world test miles on multiple vehicles, we've accomplished just that.

Features include:

• Eliminates the sloppy and problematic fluid-filled factory mounts riddled with voids
• Completely assembled and ready to install!
• Pre-load has been optimized to account for polyurethane compression set
• 40A durometer polyurethane for the optimal balance between NVH and stiffness
• Precision machined billet 6061-T6 housing with type II anodizing for durability and corrosion resistance.
• Thermal isolators keep internal mount temperatures down, prolonging the life of the polyurethane bushings
• Our poly material is more resistant to water, ozone, and chemicals, maintaining its resiliency and elasticity longer than conventional rubber.
• Crisper throttle response & more precise shifts
• All stainless steel hardware used for corrosion protection
• Custom-made error-free resistor harnesses

*NVH levels will differ depending on the extent of vehicle modifications. We highly recommend not using cylinder deactivation with these mounts. 4 cylinder mode creates extreme NVH.

*Require a break-in period of up to 2k miles NVH noticeable at 1800 and 4500 RPMs

Kit includes:

• ECS Tuning Performance 40A Polyurethane Engine Mounts - Left & Right Side
• ECS Tuning Plug & Play Resistor Harnesses
• Thermal isolators
• New main bolts