Big bore aluminum straight back shock human anatomy is redesigned for basic control and satisfaction improvements. The most truly effective bore shocks improve landings and provide better control of surface unevenness and bumps to boost traction. Fits: XT2’24, XT4’24 368392 Front Big Bore Conical Spring Set L=49mm - 2 Dots (2) a selection of Big Bore conical springs to suit the Big Bore shocks. The springs, as with some other XRAY springs, are by hand determined, chosen, and matched into pairs to guarantee precisely equal length and damping faculties. Each spring is laser-engraved with stripes to demonstrably suggest its tone.