Brand new exact replacement pivot shaft for the rear lower knuckle. Brand new high quality part that is exactly the same as the original! This replaces Polaris part number 5136473. The shaft is 3/4" x 4-5/8" long. Fits both left and right sides at the BOTTOM of the REAR knuckle and a-arm joint. Fits the following models: 2013-18 Scrambler 850 2014-18 Scrambler 1000 2009-14 Sportsman 550 (Includes Touring, X2) 2009-18 Sportsman 850 XP (Includes Touring, X2) 2015-18 Sportsman 1000 (Includes Touring) Replaces Polaris part number 5136473. We make every attempt to ensure every items fitment is accurate. We do the testing on each item before its listed for sale to ensure fitment and quality. Items may fit multiple years and models listed. Returns are subject to 15% restocking fee.