Dežru Spec-S • Street & Touring Toyota Supra A90 Coilover System

Balanced daily comfort with real back-road capability.

Designed to lower your car by approximately 25–50 mm while maintaining composure over real-world roads, the Spec-S sharpens turn-in and body control without beating you up on the commute.

Inverted monotube shocks Nickel-plated shock bodies Vehicle Specific Spring Rates

Dežru Spec-S Coilovers – A90 Toyota GR Supra

The Dežru Spec-S coilover system is engineered specifically for the A90 Toyota GR Supra, a modern turbocharged platform that demands a careful balance between daily drivability and track capability. Designed around the Supra’s suspension geometry, weight distribution, and motion ratios, the Spec-S delivers refined control and confidence without sacrificing comfort or usability on real roads.

Developed for enthusiasts who drive their Supra daily but still attend HPDE and track days, the Spec-S features digressive piston valving that prioritizes low-speed chassis control during braking, turn-in, and transitions, while remaining compliant over uneven pavement and expansion joints. Rather than chasing extreme time-attack stiffness, this tuning philosophy targets a balanced ride frequency in the ~2.0 Hz range, providing stability and feedback without excessive harshness.

Fixed-length damper bodies paired with a 25–30 mm adjustable lowered ride height maintain proper suspension stroke and geometry. This approach preserves bump travel and roll center behavior, allowing the Supra to remain predictable, composed, and confidence-inspiring whether driven aggressively on back roads or pushed hard during track sessions.

Key Features

Digressive monotube dampers for controlled body motion, consistent damping, and clear driver feedback.
Fixed-length damper bodies with 25–30 mm adjustable lowered ride height to preserve geometry and usable suspension travel.
Adjustable damping to fine-tune rebound for daily driving, spirited canyon use, or HPDE track events.
500 lb/in front and 800 lb/in rear spring rates, selected to deliver a balanced street-performance and track-capable setup while maintaining a comfortable ride frequency.
Linear HyperCoil springs for predictable load transfer and smooth, consistent response throughout suspension travel.
OEM-style upper mounts to reduce NVH while retaining proper fitment and alignment stability.
Hand-built, dyno-matched pairs to ensure precise left-to-right damping consistency.

Performance Character

The Spec-S enhances the A90 Supra’s natural balance by reducing excessive body motion while preserving compliance and traction. The digressive damping profile provides firm, supportive control during initial inputs and transitions, paired with controlled compliance that keeps the tires planted as grip levels increase.

The result is a composed, predictable, and confidence-inspiring driving experience that feels comfortable during daily use, yet stable and responsive when driven hard on track.

Why We Recommend 500 lb/in Front & 800 lb/in Rear for the Toyota Supra A90

The Toyota Supra A90 is a rear-wheel-drive platform with a near 50/50 weight distribution and a strong rear traction bias. From the factory, it’s tuned to be comfortable and stable, which can lead to a slightly soft rear feel, mild understeer at the limit, and less precise chassis control during aggressive driving.

Our 500 / 800 spring rate setup is designed for Spec-S, where the goal is to improve balance, stability, and responsiveness while maintaining everyday drivability.

By running a significantly higher spring rate in the rear, we reinforce the rear of the chassis where the Supra generates the most load. The 800 lb/in rear spring improves stability under acceleration, reduces squat, and keeps the rear platform more consistent during cornering. This helps the car feel more planted and predictable, especially when putting power down.

Up front, the 500 lb/in spring provides the support needed to control braking and turn-in without sacrificing front-end grip. It reduces dive and improves steering response while maintaining enough compliance for real-world road conditions.

The result is a setup that:

Reduces squat and improves rear stability under power
Enhances cornering balance and chassis consistency
Improves steering response and front-end control
Maintains a composed, street-friendly ride

This pairing is designed to work with our digressive valving, where the shock provides strong low-speed control during braking, acceleration, and transitions. That allows us to use properly balanced spring rates instead of relying on excessive stiffness, keeping the ride controlled without becoming harsh.

Overall, 500 front / 800 rear gives the Supra a more planted, responsive, and confidence-inspiring feel, improving performance and control while maintaining the comfort expected from a street-focused setup.

Dežru Performance Suspension warrants to the original purchaser that these parts manufactured and/or sold by Dežru Performance Suspension (the product) is free from defects in material and workmanship under normal use. Dežru Performance Suspension warrants that the product will perform substantially in accordance with the specifications set forth in the documentation provided with it. The above express warranties are made for a period of the lesser of 12,000 miles or 36 months from the date the product is installed in your vehicle. Any improper use, operation beyond capacity, substitution or addition of parts not approved by Dežru Suspension in writing, any alteration or repair by others, or any removal, defacing or altering of the identification shall void this warranty. There is no warranty on high-performance or race related parts due to the nature of usage.