XRAY created the 358276 Soft-Medium Progressive Springs to give a shifting spring rate that rewards careful setup. They compress gently at first for traction, then firm up as travel increases to prevent collapse under heavy load.
The set includes two springs marked with two stripes so you can quickly tell them apart during a pit change. They are suitable for front or rear mounting on XRAY models like the XB808 and XB9, helping to improve bite on turn-in and mid-corner balance.
Every spring is inspected and matched to ensure consistent behaviour across a pair. That matching keeps left and right feel identical, which is important for predictable lap times and confident cornering.
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