XRAY 358279 Long Progressive Rear Springs Soft to Medium  [XR-358279]

Optimise rear handling with long progressive springs

XRAY 358279 Long Progressive Springs offer a practical rear tuning option for racers wanting a smoother initial response and added support later in travel. These springs use a soft-to-medium progressive profile, are marked with two stripes, and fit the rear of XB808 and XB9 cars to help control cornering behaviour.

Designed to change rate as load increases

These springs have a more progressive rate than standard XRAY racing springs, developed from real racing input. The softer initial section helps the tyres bite at turn-in and then the rate ramps up to resist further compression, supporting higher corner speed. Each spring is measured and matched during production to ensure consistent damping across pairs.

Consistent matching for reliable setup repeatability

Each unit is compressed incrementally and its values logged so matched pairs deliver consistent characteristics. That careful matching reduces setup variability and helps you replicate suspension settings across meetings.