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Thunder Lane
TL-ONE Thunder Lane Single Adjustable Coilover Kit for Toyota Supra A90
$2,617.31
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- Description
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The TL-ONE coilover system for the Toyota GR Supra A90 is designed for drivers who want a suspension that performs equally well on the street and the track. Built around predictable damping behavior and usable suspension travel, TL-ONE delivers confidence, compliance, and consistency without unnecessary complexity.
TL-ONE is built to order and configured specifically for the A90 chassis, using proven spring rates, inverted damper architecture, and application-specific valving to support modern tire grip and chassis dynamics.
Designed for Street and Track
This system is engineered to balance ride quality, control, and performance. Whether driven daily, used for weekend canyon runs, or pushed on track, TL-ONE maintains stability and composure without relying on excessive stiffness.
Inverted Monotube Damper Design
TL-ONE 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.
Damping Philosophy & Check Valve Design
TL dampers utilize an internal check valve system that helps manage how damping forces are distributed between compression and rebound. This allows strong low-speed control for chassis stability while maintaining compliance over bumps and surface irregularities.
Learn more about how the check valve works and why it matters.
1-Way Adjustable Damping
TL-ONE features 20-click rebound damping adjustment, providing meaningful tuning changes for balance, grip, and response without overcomplicating setup.
What’s Included
- Rebuildable monotube shocks
- Inverted front struts
- Inverted rear shocks
- Modular damper design
- 20x rebound damping adjustment
- Dual height adjustment (independent travel and ride height adjustment)
- Camber / pillowball upper mounts
- Linear or digressive valving options
- Front 8 kg / Rear 16 kg linear rate springs
- Electroplated shock bodies
All TL-ONE kits are fully rebuildable and serviceable, allowing the suspension to evolve as tires, alignment, or vehicle use change.
Warranty: 3-Year Warranty.
Frequently Asked Questions
What is the TL-ONE coilover system for Supra A90?
TL-ONE is Thunder Lane’s street and track focused coilover system for the Toyota GR Supra A90, featuring inverted monotube dampers, fixed spring rates, and 20-click rebound adjustment.
What spring rates are included?
TL-ONE for the Supra A90 includes 8 kg front and 16 kg rear linear springs, selected to balance ride quality, grip, and chassis control.
What does the 20-click adjustment control?
The adjuster controls rebound damping, allowing you to tune balance, response, and grip for street or track use.
What is the check valve and why does it matter?
The check valve helps manage how damping forces are distributed between compression and rebound, improving low-speed stability while maintaining compliance. Read the full tech article here.
Are the shocks rebuildable?
Yes. TL-ONE dampers are fully rebuildable and serviceable.
Is this kit suitable for daily driving?
Yes. TL-ONE is designed to perform well on the street while offering the control and consistency needed for track use.
We build every suspension set to order and want you to know exactly what to expect from checkout to delivery.
Build Lead Time (Made-to-Order)
Due to high demand and a recent increase in new orders and rebuilds, all orders currently require a 3–4 week lead time to machine hardware and complete assembly.
Every set is built 100% in-house in Kraków, Poland—no outsourced assembly, no pre-built inventory.
Shipping Time to the United States
Once your order is complete and ready to dispatch, typical shipping time to the U.S. is 5–10 business days.
Transit time can vary slightly depending on carrier, customs processing, and your location.
Order Processing & Tracking
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You’ll receive a confirmation email after placing your order.
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When your order ships, you’ll receive an email with tracking information.
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If your order includes multiple items, they may ship together or separately depending on production status.
Important Notes
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Lead times are estimates and may change based on current workload, parts availability, or production volume.
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Business days do not include weekends or holidays.
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International shipments may experience customs-related delays outside of our control.
Need Help?
If you have a deadline (event, track day, or travel schedule) or want an update on your order, contact us and we’ll do our best to help you plan accordingly.
