Dinan Monoball Front Ball Joints The Dinan Monoball Kit provides responsiveness you can feel by replacing the rubber bushings in the thrust arms with precision ball joints and machined aluminum housings. Improves responsiveness by eliminating the deflection inherent in the stock rubber bushings while also reducing brake shimmy. The quietest bearings on the market are virtually noise free so you can live with them every day. These are the only bearings on the market that are sealed using a rubber boot to keep out dirt and road grime stopping them from wearing out prematurely. Features Improved Steering Responsiveness Reduces Brake Shimmy Nylon-lined Bearings for Quiet Operation Machined Aluminum Housings Sealed Bearings Applications 2012-2013 BMW 328I ALL 2012-2013 BMW 335I ALL 2013-2015 BMW 320I ALL 2014-2015 BMW 228I ALL 2014-2015 BMW 328I ALL 2014-2015 BMW 335I ALL 2014-2015 BMW 428I ALL 2014-2015 BMW 435I ALL 2014-2015 BMW M235I ALL 2015 BMW 428I GRAN COUPE ALL 2015 BMW 435I GRAN COUPE ALL