The TL-PRO 3-way adjustable coilover system for the Nissan 350Z and Infiniti G35 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. 

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

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.