SuperProF20 & F30 series BMW Front Control Arm and Radius Arm set is offered as a Performance upgrade from the standard OEM style rubber bushings and ball joint. The new SuperPro arms allow for adjustment to achieve additional caster independently on each side of the vehicle. This feature is best utilized to correct a slight pull and to enhance directional stability and feel, or to simply maximize positive caster for improved grip and feedback. The OEM bushings are fairly soft and the SuperPro bushings reduce the arm movement and increase stability under braking, cornering and will increase tire life. The SuperPro Alloy Lower Control Arm is an M style arm with a fixed camber increase fitted with a heim style Bushing to complete the package. The SuperPro bushings allows full articulation and movement without binding and with no increase in noise, vibration or harshness. Complete Alloy Control Arm Kit “ includes Front Radius and Lower Control Arms. Both Arms are a complete arm replacement and include SuperPro Bushings and a ball joint The Control Arm delivers 1 degree of additional camber The Radius Arm is "on car" adjustable The Radius Arms allow for up 0.8 Degrees caster increase or decrease Kit includes a spanner to adjust the Radius arms Suits Caster arm subframe mount width 95mm ALOY0030K is designed to suit the BMW F20, F21 F22 F30, F31, F34 and F35 chassis. ALOY0030K does not fit the BMW F80, F82, F83 or F87 chassis.. Factory Fit - SuperPro Alloy control arms enhance performance and handling, but also provide an quick and significant upgrade whether you DIY or have them installed by your SuperPro Authorized Dealer. Lighter, stronger, faster - these words form the foundation of SuperPro's alloy control arm range. Reduce weight, increase strength, and optimize geometry for improved grip, handing and feedback. SuperPro 2012 BMW 328i Base Front Alloy Control Arm & Radius Arm Kit. Control and Radius Arm Lower - Arm Assembly. Alloy LCA Set

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