polaris sportsman 550 850 1000 (2010-17) prop shaft bolts (set of 4) - 7519211 quad logic brand new exact replacement prop shaft bolts that fits the sportsman models. sold as a set of four. exact replacement for polaris part number 7519211. fits the following models: 2010-14 sportsman 550 (all models) 2017-20 sportsman 570 (6x6 model only) 2015-20 sportsman 850 (all models) 2015-20 sportsman 1000 (all models)