See: XRAY

XRAY have introduced new sets of front and rear linear springs for the XB4. Front & rear linear springs have been specifically designed for the big-bore shocks. Spring rate is constant during the entire spring compression. Both rear and front linear springs come marked with 2, 3 and 4 DOTS for easy identification. The springs, like all the other XRAY springs, are manually measured, selected and matched into pairs to guarantee precisely equal length and damping characteristics.