Air Lite XL Square Backer

  Air Lite XL Square Snowmobile Backer Eliminate rotating mass on your track without sacrificing durability.  For Top Gun II™ Studs - 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 1.375″ diameter and 5/16" thru-hole to mate perfectly with your Top Gun II stud. Note: For 1.175" Fast-Trac studs and longer.