ST Suspensions Rear Anti-Sway Bar – Honda Accord | 2-Door & 4-Door

Transform the handling balance and cornering composure of your Honda Accord with the ST Suspensions Rear Anti-Sway Bar — a cold-formed, heavy-duty aircraft steel sway bar engineered to reduce body roll, improve lateral stability, and sharpen the Accord’s handling dynamics. ST Suspensions’ rear sway bar upgrade reduces the wheel load differential between the inner and outer wheels in a corner, delivering immediately noticeable improvements in cornering grip and body control. Built to last with multiple quenching and tempering processes and a final epoxy coating for maximum protection against weather and road debris.

Key Features:

• Cold-formed heavy-duty aircraft steel — high-strength steel construction for superior stiffness, durability, and resistance to flex fatigue versus factory sway bars
• Multiple quenching and tempering processes — heat treatment process maximizes the steel’s strength and fatigue resistance for long-term performance under repeated cornering loads
• Epoxy coating — final epoxy finish provides maximum protection from extreme weather, road salt, and debris
• Reduced body roll — stiffer rear sway bar reduces the body roll that compromises the Accord’s handling balance and cornering confidence
• Improved lateral stability — reduces the wheel load differential between inner and outer wheels in a corner for improved traction and cornering grip
• 2-door and 4-door compatible — fits both Accord coupe and sedan body styles
• ST Suspensions quality — engineered by the performance suspension division of KW Automotive

Performance Benefits:

• Reduced Body Roll: A stiffer rear sway bar resists the lateral weight transfer that causes the body to lean in corners — keeping the Accord flatter through turns for improved driver confidence and cornering composure
• Improved Wheel Load Differential: By reducing the difference in vertical load between the inner and outer rear wheels in a corner, the ST rear sway bar improves rear traction and reduces the understeer that results from excessive rear body roll
• Sharper Handling Balance: Upgrading the rear sway bar shifts the Accord’s handling balance toward neutral — reducing the understeer tendency of the factory suspension and delivering a more responsive, driver-focused feel
• Improved Traction: More consistent rear wheel loading through corners improves rear traction, particularly during corner exit where the factory suspension’s body roll can unload the inside rear wheel
• Suspension Upgrade Complement: ST’s rear sway bar completes a suspension upgrade alongside coilovers or lowering springs — addressing the body roll that spring and damper upgrades alone cannot fully eliminate

Specifications:

• Brand: ST Suspensions
• Part Number: 51120
• Position: Rear
• Material: Cold-formed heavy-duty aircraft steel
• Finish: Epoxy coated
• Heat Treatment: Multiple quenching and tempering processes
• Body Styles: 2-door coupe and 4-door sedan

Fitment Information:

• Honda Accord — 2-door coupe and 4-door sedan
• Note: Verify your specific year and generation before ordering. Confirm fitment with ST Suspensions’ fitment guide for your exact Accord model.
• Installation: Professional installation recommended
• Alignment: Alignment check recommended after installation

What’s Included:

• ST Suspensions rear anti-sway bar (51120)
• Mounting hardware and end links
• Installation instructions

Installation Notes:

• Professional installation recommended
• Inspect all existing sway bar bushings and end links and replace if worn before installation
• Torque all fasteners to ST Suspensions’ specified values
• Alignment check recommended after installation

How Rear Sway Bars Improve Handling:

A sway bar (anti-roll bar) connects the left and right suspension on an axle, resisting the independent movement of each wheel relative to the other. When the vehicle corners, lateral weight transfer causes the body to lean toward the outside of the corner — compressing the outer suspension and extending the inner. A stiffer sway bar resists this differential movement, keeping the body flatter and maintaining more consistent wheel loading through the corner. Upgrading the rear sway bar specifically shifts the vehicle’s roll stiffness balance rearward — reducing understeer and improving the handling balance of front-wheel-drive vehicles like the Honda Accord, where the factory rear sway bar is often softer than optimal for performance driving.

Why ST Suspensions?

ST Suspensions is the performance suspension division of KW Automotive — one of Europe’s most respected suspension manufacturers. ST’s product lineup — coilovers, lowering springs, and anti-sway bars — is engineered to deliver genuine performance improvement at accessible price points. Their anti-sway bars are manufactured with cold-formed aircraft steel construction and multi-stage heat treatment for long-term durability and consistent performance.

Perfect For:

• Honda Accord (2-door and 4-door) owners seeking improved handling balance and reduced body roll
• Accord builds pairing with ST coilovers or lowering springs for a complete suspension upgrade
• Daily-driven Accords where improved cornering composure and lateral stability are desired
• Enthusiasts who want to reduce the factory Accord’s understeer tendency with a targeted rear sway bar upgrade
• Anyone completing a suspension upgrade who wants to address body roll with a quality ST Suspensions sway bar

Pro Tip: If your Accord is also running an upgraded front sway bar, pair it with this rear bar to achieve a balanced roll stiffness increase across both axles. Upgrading only the rear sway bar on a front-wheel-drive vehicle shifts handling toward oversteer — desirable for performance driving but should be dialled in carefully.

Note: Verify your specific Accord year and generation before ordering. Confirm fitment with ST Suspensions’ fitment guide for your exact model.