Engineered for the Lexus IS300, the Riaction GP-1 Digressive Coilover Kit features digressive valving technology designed to deliver responsive handling with controlled ride quality. This damping profile provides firm low-speed control for improved cornering stability and reduced body roll, while maintaining compliance over uneven surfaces—resulting in a ride that feels precise without excessive harshness.

Built for street-driven performance builds, this system enhances chassis response, improves driver feedback, and delivers a more connected driving experience.

Each kit is constructed using high-quality materials and precision engineering to ensure durability, reliability, and consistent performance.

Coilover Specifications

• Full-Length Ride Height Adjustment
• 32-Level Damping Adjustment
• Digressive Valving Technology
• Mono-Tube Damper Design
• 52mm Seamless Electroplated Carbon Steel Shock Body
• 20mm Piston Rod (McPherson Suspension)
• 14mm Piston Rod (Non-McPherson Suspension)
• 44mm High-Flow CNC 6061 Aluminum Piston
• Thinned CNC 6061 Aluminum Floating Piston
• Polyurethane Oil Seal
• SAE9254 Cold-Wound Spring
• Multi-Thickness Valving Shims
• Low Gas Pressure Design
• 7.5W Compounded Suspension Fluid
• Fully Rebuildable Construction

What’s Included

• Full set of 4 coilovers (front and rear)
• Spanner wrenches
• Damping adjustment knobs

Warranty

2-Year Factory Warranty against manufacturer defects.

International Orders

For international inquiries, contact:
info@riactionshocks.com