Steel C Track. Ancra winch track is available in two distinct styles. Our Standard C track (42357) is available in both steel and aluminum and is designed for use with our standard slider winches(43565-12 and 43565-15). Our newest style (49242-10-120) is our Double L aluminum track and is designed for our 49207 Double L slider winch models. Steel track is constructed of roll-formed 1/4" plate steel. Aluminum track is available for aluminum trailers. Custom lengths are available upon request. Winch track should be installed to meet the testing requirements of TTMA RP No. 47-03. For installation instructions, visit our web site www.ancra.com/truck/pdfs/winch_track_instl.pdf.