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Thunder Lane
TL-PRO Triple Adjustable Suspension Package Nissan 370z and Infiniti G37
$4,696.88
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- Description
- Shipping and Refund
- Reviews
The TL-PRO 3-way adjustable coilover system for the Nissan 370z and Infiniti g37 is Thunder Lane’s highest-level suspension offering for this chassis. Built for drivers who demand maximum control, consistency, and tuning flexibility, TL-PRO is designed for competitive Time Trials, aero-equipped cars, and serious track use.
Like TL-ONE, the TL-PRO utilizes a true rear coilover configuration, placing the spring and damper together at the rear wheel to improve motion ratio, rear grip, and predictability under load. The system is delivered as a complete chassis solution, including front and rear 2-hole adjustable sway bars and adjustable endlinks, allowing roll stiffness and balance to be tuned alongside damping.
3-Way Adjustable Damping
TL-PRO features true 3-way adjustability, allowing independent tuning of:
- Rebound damping – controls how the suspension returns after compression
- Low-speed compression – manages chassis platform (braking, roll, pitch, transitions)
- High-speed compression – manages bumps, curbing, and surface irregularities
Combined with adjustable sway bars, this separation allows drivers to fine-tune mechanical balance and platform support without introducing unnecessary harshness—critical for high-grip tires, aero load, and long sessions.
Built to Order — Tuned to Your Car
Every TL-PRO kit is built to order. Before production, we contact you directly to discuss your goals and vehicle configuration. Spring rates, valving, shock length, and travel are selected using factors such as:
- Tire type and size
- Vehicle weight
- Desired ride height
- Sway bar configuration and adjustment range
- Corner weights (when available)
- Driving discipline (Time Trial, track days, competition)
The result is a suspension system that delivers usable travel, clear feedback, and consistency—without relying on excessive stiffness.
What’s Included
- True rear coilover configuration
- Remote reservoirs
- 3-way adjustable damping
- 46mm monotube dampers
- CNC-machined top hats and bottom mounts
- Pillowball / spherical bearing top hats
- Electroplated shock bodies and collars
- Helper springs
- Custom shock body and spring length matched to ride height
- Front and rear 2-hole adjustable sway bars
- Adjustable sway bar endlinks (front and rear)
All TL-PRO kits are fully rebuildable, serviceable, and re-valvable, allowing the suspension to evolve as your car, tires, and aero package change.
Designed for Serious Track Use
TL-PRO is ideal for drivers running higher spring rates, wide tires, aerodynamic aids, or competing in SCCA and NASA Time Trials. With integrated sway bar adjustability and high-capacity dampers, the system is engineered to maintain balance and damping consistency under heat and load, lap after lap.
Frequently Asked Questions
What is the TL-PRO 3-way coilover system?
TL-PRO is Thunder Lane’s top-tier 3-way adjustable coilover system for the Nissan 370z and Infiniti g37, designed as a complete chassis solution for advanced track and competition use.
What does 3-way adjustable mean?
3-way adjustment allows independent control of rebound, low-speed compression (chassis platform), and high-speed compression (bumps and curbing).
Is TL-PRO a true rear coilover?
Yes. TL-PRO uses a true rear coilover design, placing the spring and damper together at the rear wheel for improved rear wheel control and predictability.
Does the kit include sway bars?
Yes. The TL-PRO system includes front and rear 2-hole adjustable sway bars with adjustable endlinks, allowing roll stiffness and balance to be tuned alongside damper settings.
Who should choose TL-PRO over TL-ONE?
TL-PRO is best suited for drivers running high-grip tires, aero, or competing seriously in Time Trials who want maximum tuning flexibility and integrated chassis balance control.
Do I need corner weights before ordering?
No. Corner weights are helpful but not required. We can build the kit using vehicle weight, tire size, ride height, sway bar configuration, and intended use.
Can TL-PRO coilovers be serviced or re-valved?
Yes. All TL-PRO kits are fully rebuildable, serviceable, and re-valvable.
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.
