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 Nissan 370Z/Infiniti G37 TL-ONE Coilover System is Thunder Lane's build-to-order true rear coilover — hand-assembled in Poland and proven in real SCCA and NASA Time Trial competition, improving rear wheel control and balance under braking, corner entry, and corner exit.
Built for Racing, Time Attack, Autocross, and HPDE
Each kit is built around your intended use, with proven baseline spring and valving combinations — Track/Race, Street/Track, Comfort, and Drift — as starting points, not off-the-shelf limits. 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, true rear coilover configuration
- 20-click rebound adjustment (1-way)
- Ride Height Adjustment (fixed-length shock bodies, matched to your target ride height)
- Spring/valving baselines: 20k F/8k R (Track/Race), 16k F/7k R (Street/Track), 14k F/6k R (Comfort), 16k F/10k R (Drift)
- Pillowball/spherical bearing top hats
- CVP + PVP dyno graphs included with every kit
Construction & Hardware
CNC-machined top hats and bottom forks pair with electroplated shock bodies and collars for long-term corrosion resistance. Every kit is fully rebuildable, serviceable, and re-valvable — with a path to upgrade to a 3-way adjustable remote-reservoir system later.
Fitment
Nissan 370Z and Infiniti G37 — exact configuration confirmed during the build.
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.
What does "true rear" coilover mean on a 370Z/G37?
A true rear coilover places the spring and damper together at the rear wheel, improving motion ratio, rear wheel control, and predictability under load compared to divorced spring setups.
Do I need to know my corner weights before ordering?
No — helpful but not required. We can tune the kit using vehicle weight, tire size, ride height, and sway bar configuration.
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 Nissan 370Z / Infiniti G37 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.
