CUSTOM VALVING AVAILABLE
Sale
Thunder Lane
Porsche 911 (996) TL-ONE Coilover System (1999–2004)
$2,975.00
In Stock
Pre-Order
Sold out
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 Porsche 911 (996) TL-ONE Coilover System is Thunder Lane's track-focused single-adjustable coilover for the 996-generation 911 — hand-assembled in Poland and bespoke-valved to your car, tires, and goals. Every set ships with 20-click rebound adjustment, rebuildable monotube dampers, and camber-capable pillowball upper mounts.
Built for Racing, Time Attack, Autocross, and HPDE
The 996's rear-biased weight distribution rewards a coilover that controls platform motion precisely without going harsh. TL-ONE is valved around that balance, and 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
- Rebuildable monotube dampers, modular design
- 20-click rebound adjustment (1-way)
- Camber / pillowball upper mounts
- Spring rates finalized in consultation with you before production begins
- Linear / digressive valving; CVP + PVP dyno graphs included with every kit
Construction & Hardware
Check valves manage the split between compression and rebound for strong low-speed platform control. 46mm monotube bodies are electroplated for corrosion resistance, and every kit is fully rebuildable, serviceable, and re-valvable as tires, alignment, or use case change.
Fitment
Porsche 911 (996), including Carrera 4, 1999–2004.
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.
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.
How are spring rates chosen?
We finalize spring rates with you before production begins, matched to your car, tires, and goals.
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 Porsche 911 (996) 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
-
You’ll receive a confirmation email after placing your order.
-
We’ll reach out to confirm your build spec—spring rates, valving, and ride height—before production begins.
-
When your order ships, you’ll receive an email with tracking information.
-
If your order includes multiple items, they may ship together or separately depending on production status.
Important Notes
-
Lead times are estimates and may change based on current workload, parts availability, or production volume.
-
Business days do not include weekends or holidays.
-
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.
