If you tune for lap time, the XRAY 368482 Rear Big Bore Conical Spring Set for the XB2 series gives predictable suspension behaviour. Each spring is hand-paired to ensure identical length and damping so your rear end reacts evenly on corners.
Springs carry laser-etched stripes to indicate stiffness, letting you swap and compare rates quickly between sessions. The 57.5mm length and two-dot stiffness work well when balancing traction and roll control on a variety of surfaces.
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