When you need repeatable rear behaviour, the XRAY 368482 Rear Big Bore Conical Spring Set for the XB2 series is a strong option. These springs are paired to identical free length and damping traits so the rear suspension responds uniformly during aggressive driving.
Each spring features laser-engraved stripes that indicate its stiffness, making rate identification and swapping straightforward trackside. The 57.5mm two-dot setup gives a controlled blend of support and compliance for rear-end tuning.
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