TL-ONE Thunder Lane Single Adjustable Inverted Strut Coilover Kit for Ford Mustang S550 (2015–2023)

The Thunder Lane custom coilover system for the Ford Mustang S550 is engineered for drivers who want a suspension that can be built around their goals—from HPDE and autocross to time attack and wheel-to-wheel. Every kit is assembled by hand and valved to match your tire, aero, and grip level.

Designed around usable stroke and predictable damping behavior, this kit delivers confidence at the limit without sacrificing mechanical grip over bumps, curbing, and transitions.

Built to Order — Tuned to Your Ford Mustang S550

Each kit is built per order for 2015–2023. Spring rates, valving style, and overall setup are selected using your intended use, ride height goals, and available vehicle data (including corner weights when provided).

1-Way Rebound Adjustable Damping

This system focuses on meaningful adjustability that’s easy to dial in at the track. Your damping configuration is selected during the build, then fine-tuned with on-car adjustment to balance grip, response, and stability.

What’s Included

• Front camber plates
• Front inverted struts (36 mm piston, 40 mm body)
• 20-step rebound damping adjustment
• Independent ride height adjustment (separate height vs preload)
• Helper springs
• Rebuildable inverted dampers
• Track baseline spring setup: Front 12 kg / Rear 16 kg (customizable)

Dyno documentation: Every kit includes individual shock dyno graphs (CVP and PVP) for transparency and repeatability.

Warranty: 3-Year Warranty.