WHY TRIPLE-ADJUSTABLE WITH A RESERVOIR MATTERS

The RS PRO3 is the most adjustable damper in the JRZ RS line. Where the RS PRO gives you two knobs — high-speed compression and rebound — the RS PRO3 adds a dedicated low-speed compression circuit. That third adjustment separates body control (roll, pitch, squat) from bump response (kerbs, surface changes, transitions), so you can dial in ride quality without compromising chassis stability.

• High-speed compression (14 clicks) — sets the blow-off threshold for impacts, kerbs, and surface changes. Controls how the damper handles large, fast shaft velocities so the tire stays planted without transmitting harshness to the chassis.
• Low-speed compression (8 clicks) — controls body motion: roll rate, pitch under braking, and squat under acceleration. This is the knob that lets you tune balance and weight transfer independently from bump response.
• Rebound (21 clicks) — controls how the damper extends after compression. Critical for weight transfer timing, corner exit traction, and overall chassis composure under load.

Three independent adjustments mean you’re not trading ride quality for grip. Each knob does one job, and every click is noticeable and proportional.

WHAT THE THIRD KNOB ACTUALLY DOES

On a double-adjustable damper, compression is one circuit — you’re adjusting everything from parking lot speeds to hitting kerbs with the same knob. The RS PRO3 splits compression into two ranges. Low-speed compression handles the slow shaft velocities that cause body roll, brake dive, and acceleration squat. High-speed compression handles the fast shaft velocities from impacts, kerbs, and rough surfaces.

In practice, this means you can stiffen body control for faster transitions without making the car harsh over bumps. It’s the adjustment that makes the biggest difference for drivers who use their car on both street and track — you can run a firm, responsive setup through corners without punishing your spine on the drive to the circuit.

WHY THE SUPRA A90 BENEFITS FROM A RESERVOIR DAMPER

The A90 Supra’s B58 inline-six and short wheelbase make it responsive but demanding on suspension. Under hard track use, twin-tube dampers without a reservoir will heat-soak during a 20-minute session and fade — you lose consistency exactly when you need it most. The RS PRO3’s remote reservoir adds fluid volume and cooling surface area, keeping damping forces stable from your first lap to your last.

The adjustable gas pressure also lets you fine-tune cavitation resistance based on your spring rates and driving style — something no sealed twin-tube can offer. For Supra owners pushing the car on track days, time attacks, or spirited canyon roads, the RS PRO3 delivers the most adjustment range available in the RS line.

JRZ RS PRO3 COILOVERS TOYOTA SUPRA A90 FITMENT

Fits 2019-2026 Toyota Supra A90 (all variants including 2.0T and 3.0T). Valving and spring selection are tailored to the Supra’s front-engine, rear-drive weight distribution and multi-link suspension geometry. We recommend a full four-wheel alignment and corner balance after installation at a shop experienced with performance suspension setups.