The Skunk2 Pro-ST Coilovers for the 2017–2021 Honda Civic Si offer a premium fully adjustable suspension setup for both street and track use. Designed with performance and versatility in mind, the Pro-ST system gives drivers 12 levels of damping adjustability and independent control over ride height and spring preload.

Each unit features a one-piece forged mono-tube body with oversized piston valves for consistent fluid control and stability. The included SAE 9254V race springs are CNC-wound, phosphate-coated, and powder coated for durability and performance. Shortened shock shafts allow for maximum lowering without sacrificing ride quality.

Key Features:

• 12-way adjustable damping for fine-tuning street/track handling

• Independent ride height and spring preload adjustments

• One-piece forged mono-tube design with oversized piston valves

• Shortened shaft stroke for aggressive lowering

• CNC-wound SAE 9254V race springs

• Spring Rate: Front 6 kg/mm | Rear 6 kg/mm

• Billet aluminum upper mounts with spherical bushings

Fitment:

• 2017–2021 Honda Civic Si

Recommended Add-ons:

• Rear Camber Kit (Hard Anodized): 516‑05‑1600

• Rear Camber Kit (Gold Anodized): 516‑05‑1605