Whiteline KTA383 Front Lower Control and Radius Arm Kit for Select BMW 2012-2021

Fits select 2012-2021 BMW 2-Series, 3-Series, 4-Series, and ActiveHybrid 3 (including 228i, 230i, 320i, 328i/d, 330i/e, 335i, 340i, 428i, 430i, 435i, 440i, M235i, and M240i).

The Whiteline KTA383 is a comprehensive 4-arm upgrade kit designed to eliminate front-end geometry issues and replace soft, failure-prone factory rubber bushings on the BMW F22 and F3X platforms. These alloy tension arms are engineered for vehicles that have been lowered with coilovers or lowering springs, providing the necessary adjustment to restore handling precision. The kit features adjustable synthetic elastomer bushings with internal grease reservoirs for self-lubrication and sealed ball joint ends for maintenance-free reliability.

By utilizing sealed inner bearings similar to F8X M-series components, these arms significantly reduce deflection under heavy cornering loads. Drivers can achieve +/- 0.5 degrees of caster adjustment for better straight-line tracking and a fixed 0.5 degrees of additional negative camber to increase the front tire contact patch. This is an essential upgrade for track or autocross enthusiasts seeking improved turn-in grip and enhanced steering feel.

• Manufacturer Part Number: KTA383
• Kit Contents: 4 Complete arms (Control and Radius arms)
• Adjustment Range: +/- 0.5° Caster adjustment
• Geometry: Adds fixed 0.5° negative camber
• Materials: High-strength lightweight alloy with sealed bearings
• Bushings: Synthetic elastomer with internal grease reservoirs
• Included Hardware: Extreme pressure molybdenum disulphide (LM) grease and installation guide