CUSTOM VALVING AVAILABLE
Sale
BUILT IN-HOUSE IN POLAND
3-4 WEEK LEAD TIME
- Description
- Shipping and Refund
- Reviews
Built to order. Not sure which spec you need? Spec your build with us →
The Mazda MX-5 Miata NA/NB TL-ONE Coilover System is Thunder Lane's track-focused single-adjustable coilover for the NA (1989–1997) and NB (1999–2005) Miata — hand-assembled in Poland and valved for real grip, usable travel, and repeatable damping.
Built for Racing, Time Attack, Autocross, and HPDE
The NA/NB platform rewards momentum and mechanical grip but punishes dampers that waste travel — TL-ONE is engineered for more effective bump travel and controlled motion so you can run your target ride height without giving away compliance. Every kit can also be valved specifically for street use — the compliance needed for competent track use often makes for a comfortable street ride, since controlling the platform better also controls body motion better on the street.
Technical Specs
- 46mm monotube dampers
- 20-click rebound adjustment (1-way, build-dependent optioning available)
- Ride Height Adjustment (fixed-length bodies, reduced dead space vs. sleeve-style kits)
- Spherical bearing/pillowball top mounts
- CVP + PVP dyno graphs included with every kit
Construction & Hardware
Check valves and advanced piston design manage the split between compression and rebound for consistent performance under heat. Electroplated damper bodies resist corrosion, and every kit is rebuildable and serviceable — with a path to upgrade to 3-way remote-reservoir damping later.
Fitment
Mazda MX-5 Miata NA (1989–1997) and NB (1999–2005).
Frequently Asked Questions
What's the lead time?
4–6 weeks, built to order.
What's the warranty?
6 months — void for track damage, covers unreasonable wear and defects only.
Does this fit both NA and NB Miata?
Yes — this listing covers NA (1989–1997) and NB (1999–2005) fitment.
Do you include dyno sheets?
Yes — every set ships with CVP and PVP dyno graphs.
Is this streetable?
Yes — every kit can be valved specifically for street use if that's your preference. Even with track-oriented valving, the compliance needed for competent track use often makes for a comfortable street ride, since controlling the platform better also controls body motion better on the street.
Racing Thunder Lane suspension in Time Attack, Hill Climb, or wheel-to-wheel? Ask about product credit through our contingency program.
Want the full breakdown for your chassis? Read the Mazda MX-5 Miata coilover buying guide.
Not sure which spec you need?
Tell us the chassis, how the car is built, and how you use it. We spec the kit before anything is assembled.
Spec your build with usWe 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)
Because every set is machined and assembled for one specific car, most orders require a 4–6 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.
Where We Ship
We currently ship to the United States, Canada, Mexico, and Central America, with free shipping to every destination we serve.
Order Processing & Tracking
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You’ll receive a confirmation email after placing your order.
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We’ll reach out to confirm your build spec—spring rates, valving, and ride height—before production begins.
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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.
