Toyota Supra A90 Coilovers (2020–2026) – Traction Plus Ultra

Riaction Traction Plus Ultra (TPU) Coilovers for the 2020+ Toyota GR Supra A90 are designed to provide precise damping control, improved cornering stability, and more predictable weight transfer during aggressive street driving and track use. Developed for the fifth-generation Toyota Supra, this suspension system focuses on managing chassis movement under braking, acceleration, and sustained lateral loads while maintaining responsive handling characteristics.

The A90 Supra's rear-wheel-drive layout and turbocharged power delivery place significant demands on suspension control, particularly during corner exit and rapid changes in direction. Riaction's digressive piston valving generates increased damping force at lower shaft velocities to help limit body roll, pitch, and excessive weight transfer. As suspension shaft velocity increases, the digressive damping characteristics help manage movement over uneven pavement and track surfaces without unnecessarily increasing high-speed damping resistance.

With 32 levels of damping adjustment, drivers can fine-tune suspension response to suit road conditions, tire selection, and driving preferences. Full-length ride height adjustment provides additional flexibility for setting vehicle stance and suspension height, making the system suitable for street-driven Supras and more aggressive track-oriented setups.

The Traction Plus Ultra system incorporates nickel-coated shock bodies for corrosion resistance and a hex screw preload collar locking system to maintain spring preload settings under repeated suspension loads. Non-MacPherson components feature Riaction's signature orange protective coating, while pillowball upper mounts are included where applicable.

Internally, the monotube dampers utilize a 44mm high-flow CNC 6061 aluminum piston, multi-thickness valving shims, and a low-gas-pressure design. Paired with SAE9254 cold-wound performance springs and 7.5W compounded suspension fluid, these components provide controlled damping characteristics during repeated cornering, braking, and acceleration loads.

Each Riaction Traction Plus Ultra Coilover kit is fully rebuildable and includes a 2-year factory warranty against manufacturing defects.

Traction Plus Ultra Coilover Features & Specifications

• Full-Length Ride Height Adjustment

• 32 Levels of Damping Adjustment

• Digressive Piston Valving

• Monotube Damper Design

• Nickel-Coated Shock Bodies for Corrosion Resistance

• Hex Screw Preload Collar Locking System

• Signature Orange Coating on Non-MacPherson Components

• Pillowball Upper Mounts (When Applicable)

• 44mm High-Flow CNC 6061 Aluminum Piston

• CNC 6061 Aluminum Floating Piston

• Polyurethane Oil Seals

• SAE9254 Cold-Wound Performance Springs

• Multi-Thickness Valving Shims

• Low-Gas-Pressure Internal Design

• 7.5W Compounded Suspension Fluid

• Fully Rebuildable Coilover Construction

• 2-Year Factory Warranty

Factory Spring Rates

• Front: 8K

• Rear: 8K

Vehicle Fitment

• Make: Toyota

• Model: GR Supra

• Chassis: A90 / A91 (confirm specific application)

• Years: 2020+

Additional Information

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