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.. Dinan 12-18 BMW 320i/328i/330i/335i/340i/428i/430i/435i/440i (F30/F32) Lower Control Arm Kit - Front. Dinan Lower Control Arm Monoball Kit - 2012-2018 BMW 320i/328i/330i/335i/340i. Dinan Lower Control Arm Monoball Kit - 2014-2021 BMW 228i/230i/M235i/M240i. Dinan Lower Control Arm Monoball Kit - 2014-2020 BMW 428i/430i/435i/440i. Nylon-lined bearings for quiet operation. Not compatible with xDrive vehicles.. Improved steering responsiveness. Front - F22/F23/F30/F32/F33/F36. LCA BALL JOINT KIT F22F30F32. Machined aluminum housings. Reduces brake shimmy. Arm Monoball Kit. Sealed bearings. DIN SBJK

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