TL-PRO Thunder Lane Triple Adjustable Coilover Kit for Toyota Supra A90

The TL-PRO 3-way adjustable coilover system for the Toyota GR Supra A90 is Thunder Lane’s highest-level suspension offering for this chassis. Designed for drivers who demand maximum control, consistency, and tuning flexibility, TL-PRO is engineered for serious track use while remaining fully configurable for advanced street and street/track builds.

True 3-Way Adjustable Damping

TL-PRO features independent 3-way damping adjustment, allowing precise control over both chassis platform and high-speed events:

• 20-click rebound adjustment – controls balance and response
• 34-click low-speed compression – manages braking, roll, pitch, and transitions
• 22-click high-speed compression – manages bumps, curbing, and surface irregularities

This separation allows drivers to tune mechanical grip and platform support without introducing unnecessary harshness—critical for high-grip tires and long track sessions.

Inverted Monotube Damper Design

TL-PRO for the Supra A90 features inverted front struts and inverted rear shocks. This design increases rigidity under load, improves durability, and delivers more consistent damping behavior during aggressive driving. This also removes some unsprung weight from the rear, by moving the shock body to the body-side from the knuckle-side

Remote Reservoirs & Trunk-Friendly Canisters

TL-PRO for the A90 Supra uses external compression canisters with quick disconnect fittings, allowing the reservoirs to be assembled cleanly inside the trunk. The increased oil volume improves thermal stability and damping consistency under sustained load.

Built to Order — Tuned to Your Supra

Every TL-PRO kit is built to order. Before production, we confirm your vehicle configuration and goals. Spring rates, valving style, hose length, and setup details are selected using factors such as:

• Tire type and size
• Vehicle weight
• Desired ride height
• Alignment and intended use
• Corner weights (when available)

Damping Philosophy & Check Valve Design

TL dampers utilize an internal check valve system to help manage how damping forces are distributed between compression and rebound. This allows strong low-speed platform control while maintaining compliance over bumps and curbing. Learn more about how the check valve works and why it matters.

What’s Included

• Electroplated shock bodies
• Rebuildable monotube dampers
• Front and rear compression canisters with quick disconnects
• Inverted front struts
• 20x rebound adjustment
• 34x low-speed compression adjustment
• 22x high-speed compression adjustment
• Independent ride height and travel adjustment
• 2.5″ linear springs
• Customizable spring rates
• Linear or digressive valving options
• Micro-cellular polyurethane bump stops
• Customizable hose length
• Spherical bearing top mounts
• Individual replacement parts available

All TL-PRO kits are fully rebuildable, serviceable, and re-valvable, allowing the suspension to evolve as tires, alignment, and vehicle use change over time.