YakAttack GTSL90 GearTrac 12'' BlackYakAttack GTSL90 GearTrac 12'' Black The GTSL90 surface mount track is similar in size and shape to the GT90, but is made from a high end, super strong polymer. Designed for light to medium duty applications, the single GTSL90 kit comes ready to install and includes either a 4", 8", 12", or 16" track, drilled and with hardware. The optional FullBack backing plate provides easier installation and increased security. Want to add some style to your