YONAKA MOTORSPORTS SPEC II (TC2) 28-Way Adjustable Coilovers for Subaru WRX STI 2008–2014

Part Number: YMTC2-WRX0814-STI Brand: YONAKA MOTORSPORTS

Lower Your STI. Sharpen Your Handling. Take Control of Every Corner.

The YONAKA MOTORSPORTS SPEC II (TC2) Coilover Suspension Kit is designed for the 2008–2014 Subaru WRX STI, delivering adjustable suspension performance, improved cornering control, and a more aggressive lowered stance.

Featuring 28-way adjustable damping, front camber plates, and pillow-ball mounts, these coilovers allow drivers to fine-tune suspension response for daily driving, spirited street performance, and track use.

Why Upgrade?

• 28-way adjustable damping

• Approximately 2–3 inches of height adjustment travel

• Front adjustable camber plates

• Front pillow-ball bushings

• Fully threaded twin-tube shock absorbers

• Independent ride-height adjustment without changing spring compression

• Improved cornering response and handling control

• Internal bump stops to help protect against excessive compression

• Protective rubber dust shields

• Designed for street and track applications

• One-year manufacturer warranty against factory defects

Vehicle Fitment

2008–2014 Subaru WRX STI

STI models only. Not compatible with standard WRX models.

Specifications

• Series: SPEC II (TC2)

• Suspension Type: Full Coilover Kit

• Damper Design: Twin-Tube

• Damping Adjustment: 28 Levels

• Height Adjustment Travel: Approx. 2–3"

• Front Spring Rate: 12 kg/mm

• Rear Spring Rate: 6 kg/mm

• Front Upper Mounts: Pillow-Ball

• Front Camber Plates: Adjustable

• Ride Height Adjustment: Fully Threaded Lower Shock Mount

• Internal Bump Stops: Included

• Dust Protection: Rubber Shock Dust Shields

SPEC II Suspension Performance

The SPEC II series combines adjustable damping with a fully threaded shock body, allowing drivers to lower their vehicle without relying on spring compression to adjust ride height.

With 28 levels of damping adjustment, drivers can fine-tune suspension firmness for comfort, handling response, or more aggressive driving conditions.

The front pillow-ball mounts and adjustable camber plates provide additional suspension precision, while the 12 kg/mm front and 6 kg/mm rear springs deliver a performance-oriented setup.

Important Fitment Notice

Designed specifically for 2008–2014 Subaru WRX STI applications.

Does not fit standard Subaru WRX models.

Please verify compatibility with your specific model year, suspension configuration, and factory mounting points before purchasing.

Installation & Setup

Professional installation is recommended.

• Set ride height and spring preload according to manufacturer recommendations.

• Adjust damping settings to suit your driving conditions.

• Set front camber as needed.

• Verify suspension travel and tire clearance.

• Check all mounting hardware after installation.

• Perform a professional four-wheel alignment.

Professional Installation Available

RPM Racing offers professional coilover and suspension installation services.

Contact RPM Racing for installation availability, pricing, and scheduling.

Lower your STI, sharpen your cornering, and enjoy adjustable suspension performance with YONAKA MOTORSPORTS SPEC II coilovers.