Air Lite SP Double Backer

  Air Lite SP Double Backer For Single Ply Snowmobile Tracks Give your single-ply track the support it needs while maintaining the most aggressive bite.  Spacing compatible with all Fast-Trac Studs. Designed For Single Ply Tracks Increased diameter compared to the XL backer to accommodate larger SP stud. Maximum Support The extended lip supports stud from the bottom giving you superior support  compared to a tall nut. Easy On Track Backer features a smooth edge radius that doesn't dig into your track. Doesn't Bend Like Aluminum Or Steal Our polymer blend features form memory so your backer will keep shape if you hit a rock or other hard surface. Lightweight Significantly lighter then both steel and aluminum backers to keep your sled performing at its highest potential. Quality Material Made of DUPONT® polymers so you know you are getting the highest quality product possible. Match Your Machine Available in nine colors to accent your snowmobile. Specs 1.500″ diameter and 5/16" thru-hole