S3 Suspension Coilovers - Acura TSX (CL9) (2004-2008)

S3 Suspension Coilovers - Acura TSX (CL9) (2004-2008)

Transform the handling, response, and stance of your 2004–2008 Acura TSX CL9 with an S3 Suspension one-way adjustable coilover system. Designed as a complete bolt-in suspension solution, this system combines premium Swift Springs with application-specific damper valving for predictable performance on the street or track.

Each S3 Suspension coilover system is assembled by hand with an emphasis on precision, consistency, and long-term durability. Spring rates and damper valving are developed through extensive shock-dyno analysis and then validated through real-world street driving and track testing.

Whether you are building a comfortable performance-oriented daily driver, a dual-purpose street and track car, or a dedicated track vehicle, multiple configurations are available to match your intended use.

Key Features

• 32 levels of rebound damping adjustment
• One-way adjustable coilover design
• Gas-pressurized monotube dampers
• Premium Swift Springs selected for the application
• Application-specific spring rates and damper valving
• Precision-machined shock bodies
• Corrosion-resistant shock-body threads
• Independent ride-height and spring-preload adjustment
• Pillowball top mounts for improved steering response
• Camber-adjustable top hats where supported by the application
• Spherical-bearing lower mounts where applicable
• Zinc-plated hardware where applicable
• Protective bump stops and shock dust boots
• Complete bolt-in installation hardware included

Available Configurations

Street — 10/7KG

The Street configuration uses balanced spring rates and application-specific valving to improve handling while maintaining comfort for daily driving. This setup is ideal for owners who want sharper vehicle response, adjustable ride height, and better chassis control without creating an excessively aggressive street ride.

Street/Track — 12/8KG

The Street/Track configuration offers a more aggressive balance of spring rates and damping. It is designed for spirited street driving and occasional track use while remaining suitable for a performance-oriented street vehicle.

Track — 14/10KG

The Track configuration features increased spring rates and more aggressive damping to maximize grip, chassis response, and suspension control during track use. Due to its performance-focused setup, this configuration is not recommended for regular daily street driving.

Custom Specifications

Custom spring rates and damper valving are available for vehicles with specialized requirements. This option may be appropriate for dedicated competition cars, weight-reduced builds, specialized tire packages, unique vehicle setups, or other applications requiring a tailored suspension system.

Please contact us before ordering a custom-specification system. Vehicle details, modifications, intended use, tire selection, and performance goals may be required to determine the appropriate setup.

Monotube Damper Design

The gas-pressurized monotube dampers separate the oil and gas chambers to help reduce aeration, heat buildup, and shock fade. This design provides responsive damping and more consistent suspension behavior during demanding street or track driving.

Independent Height and Preload Adjustment

Independent adjustment collars allow ride height and spring preload to be set separately. This makes it possible to adjust the vehicle’s stance without relying solely on spring compression to change ride height.

Vehicle Fitment

• 2004 Acura TSX
• 2005 Acura TSX
• 2006 Acura TSX
• 2007 Acura TSX
• 2008 Acura TSX
• Chassis code: CL9

Fitment notice: Verify your vehicle’s year, model, chassis, and intended use before ordering. Camber adjustment, mounting hardware, and certain components may vary by application.

What Is Included?

• S3 Suspension coilover assemblies
• Application-selected Swift Springs
• Top mounts and applicable mounting components
• Bump stops and shock dust boots
• Required bolt-in installation hardware

Manufacturer Warranty

S3 Suspension coilover systems include a limited two-year manufacturer warranty. Warranty eligibility, coverage, exclusions, and approval are subject to S3 Suspension’s current warranty terms and conditions.

Need Help Choosing a Configuration?

The correct configuration depends on how your Acura TSX will be used. Contact us before ordering if you need help choosing between the Street, Street/Track, Track, or Custom Specification options.