Compact rubber air springs Less vibration 1/4" thick mounting bracket Slotted holes for a universal fit Air spring uses a bicycle style valve that allows the rider to easily inflate the air spring Air Ride Solo Seat Bracket Kit gives you a 2.1" length of travel that is very comparable to a set of 3" seat springs The seat bracket is powder coated black for durability while the weld-on frame mounting bracket is formed from one piece of steel Easy installation The frame mounting bracket is coped for perfect fitment on 1-1/8" tubing but can easily fit 1" or 1-1/4" cross members Bracket is raw finish mild steel for easy weld ability Maximum recommended weight is 225lbs