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 350Z/Infiniti G35 TL-PRO Coilover System is Thunder Lane’s highest-level suspension for this chassis, built for drivers who demand maximum control, consistency, and tuning flexibility — hand-assembled in Poland for competitive Time Trials, aero-equipped cars, and serious track use. Like TL-ONE, TL-PRO uses a true rear coilover configuration for improved motion ratio, rear grip, and predictability under load.
Built for Racing, Time Attack, Autocross, and HPDE
Combined with adjustable sway bars, independent rebound, low-speed compression, and high-speed compression let drivers fine-tune mechanical balance and platform support without unnecessary harshness — critical for high-grip tires, aero load, and long sessions. 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, 34-click low-speed compression, 18-click high-speed compression (true 3-way)
- Ride Height Adjustment (fixed-length shock bodies, matched to your target ride height)
- Front and rear 2-hole adjustable sway bars with adjustable end links
- 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)
- CVP + PVP dyno graphs included with every kit
Construction & Hardware
CNC-machined top hats and bottom mounts pair with pillowball/spherical bearing top hats and electroplated shock bodies for long-term corrosion resistance. Every kit is fully rebuildable, serviceable, and re-valvable as your car, tires, and aero package change.
Fitment
Nissan 350Z and Infiniti G35 — 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.
Is TL-PRO a true rear coilover?
Yes — TL-PRO places the spring and damper together at the rear wheel for improved rear wheel control and predictability.
Does the kit include sway bars?
Yes — front and rear 2-hole adjustable sway bars with adjustable end links are included, letting roll stiffness and balance be tuned alongside damper settings.
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 350Z / G35 track build 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.
