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

Rear spring upgrade for sharper corner grip

The XRAY 358279 Long Progressive Springs bring a soft-to-medium progressive feel to the rear end of your XB808 or XB9. Marked with two stripes for quick recognition, these springs are designed to refine rear grip and mid-corner balance for racing conditions.

Progressive curve tuned for on-track performance

From development on the track, these springs show a more progressive rate than standard XRAY items. The gentler initial rate helps the tyres hook up at turn-in while the rising rate under compression keeps the car stable as cornering force increases. Individual inspection and matching ensure each pair behaves consistently during a race weekend.

Precision matched pairs reduce setup surprises

Manufactured with incremental compression checks and recorded values, every pair of springs is matched to deliver repeatable suspension response. That matching makes it easier to dial in rear handling session after session.