If you can get your hands on a flexible tape measure , like what a seamstress would use. Then I would just measure the length of your sliders compared to the cut length of the duponts. Not many guys measure the length of their slider. The dealer here just brings in one length and you cut to fit. Except for the duponts, they only fit the XTX and shorter, but still cut to fit.. To short for the MTX sleds.