Eibach 35129.312 Rear Anti-Roll Bar Sway Bar Kit for 2005-2014 Ford Mustang S197

Vehicle Fitment

• 2005-2010 Ford Mustang Coupe (4.0L V6, S197)
• 2005-2010 Ford Mustang Coupe (4.6L V8, S197)
• 2005-2010 Ford Mustang Convertible (4.0L V6, S197)
• 2005-2010 Ford Mustang Convertible (4.6L V8, S197)
• 2007-2010 Ford Mustang Shelby GT500 Coupe (5.4L Supercharged V8, S197)
• 2007-2010 Ford Mustang Shelby GT500 Convertible (5.4L Supercharged V8, S197)
• 2011-2014 Ford Mustang Coupe (3.7L V6, S197)
• 2011-2014 Ford Mustang Coupe (5.0L V8, S197)
• 2011-2014 Ford Mustang Convertible (3.7L V6, S197)
• 2011-2014 Ford Mustang Convertible (5.0L V8, S197)
• 2011-2012 Ford Mustang Shelby GT500 Coupe (5.4L Supercharged V8, S197)
• 2011 Ford Mustang Shelby GT500 Convertible (5.4L Supercharged V8, S197)
• 2012-2013 Ford Mustang Boss 302 Coupe (5.0L V8, S197)
• 2013-2014 Ford Mustang Shelby GT500 Coupe (5.8L Supercharged V8, S197)
• 2013-2014 Ford Mustang Shelby GT500 Convertible (5.8L Supercharged V8, S197)

Fitment Notes

• This is the Rear Anti-Roll Bar Kit only - does not include the front sway bar. Front bar sold separately (Eibach 35125.310).
• 2012 Ford Mustang Shelby GT500 Convertible is not listed as a confirmed fitment - Coupe only for 2012 GT500.
• Eibach does not guarantee fitment, height, or warranty on unlisted applications.

Features

• Tubular hollow-bar construction reduces unsprung weight while delivering maximum torsional stiffness
• 3-way adjustable design allows driver-selectable roll stiffness settings (soft, medium, firm) to match driving conditions and personal preference
• Precision-engineered to reduce body roll and increase lateral stability during cornering
• Increases rear grip by keeping tires in better contact with the road surface through high-speed corners
• Compatible with OEM suspension components - works with factory struts and end links
• Engineered and dyno-tested specifically for each S197 Mustang application by Eibach suspension engineers
• Designed for both daily street driving and track use without compromising ride quality
• Manufactured in the USA at Eibach's Corona, California facility
• Backed by Eibach's industry-leading Five-Year Warranty against factory defects in material and workmanship

Specifications

• Part Number: 35129.312
• Position: Rear axle
• Bar Diameter: 25mm
• Bar Construction: Tubular hollow steel
• Adjustability: 3-Way (3 selectable stiffness positions)
• Platform: Ford Mustang S197 (2005-2014)
• Drivetrain: RWD
• Warranty: 5-Year limited warranty (factory defects in material and workmanship)
• Country of Manufacture: USA

Included Components

• 1x Eibach 25mm Rear Tubular Anti-Roll Bar (3-Way Adjustable)
• 1x Installation hardware kit

Product Description

The Eibach 35129.312 ANTI-ROLL-KIT is a rear-only, 25mm tubular sway bar engineered specifically for the 2005-2014 Ford Mustang S197 platform. Built from hollow tubular steel, this bar delivers the torsional rigidity needed to dramatically reduce body roll and rear-end instability during hard cornering, without adding unnecessary unsprung weight. Its 3-way adjustable design gives drivers the flexibility to dial in their preferred roll stiffness setting - whether that means a compliant daily-driving setup or a firm, track-ready configuration - all from the same bar.

Unlike a universal sway bar, this kit is application-engineered to integrate directly with the S197's factory suspension geometry. It is compatible with OEM struts and end links, meaning no major modifications are required for installation. Whether fitted to a base V6 coupe, a GT Convertible, a Boss 302, or a supercharged Shelby GT500, this anti-roll bar improves rear tire contact, sharpens steering response, and reduces the rear squat and sway that can make the S197 feel loose in aggressive corners.

Manufactured in Eibach's Corona, California facility, this kit reflects the same engineering standards used across Eibach's motorsports and OEM supplier programs. For drivers looking to complement this bar with a front upgrade, Eibach offers the matching front anti-roll bar (part number 35125.310) for a full ARB system. Covered by a Five-Year Warranty against factory defects in material and workmanship, the Eibach 35129.312 is the ideal performance handling upgrade for any S197 Mustang owner seeking sharper, more controlled cornering dynamics.