BTKUSA X3M/X4M Adjustable Front Lower Control Arms

BTKUSA X3M/X4M Adjustable Front Lower Control Arms

MADE IN USA 🇺🇸

BTKUSA BMW F97 X3M / F98 X4M Adjustable Front Lower Control Arms (FLCA)

The BTKUSA X3M/X4M Front Lower Control Arms were engineered to improve front suspension geometry, increase rigidity, and provide significantly more alignment adjustability than the factory control arms.

Lowering the X3M/X4M chassis changes the factory suspension geometry, affecting camber, roll center, and overall suspension characteristics. These changes can contribute to uneven tire wear, reduced steering response, and increased understeer. Our adjustable FLCA design allows you to properly dial in the front suspension for improved handling, alignment, and overall front-end performance.

Each arm is CNC machined from 6061-T6 billet aluminum, providing an extremely rigid yet lightweight construction. The arms are paired with 17-4 H900 stainless steel double adjusters, allowing for precise adjustments without the hassle of traditional jam-nut style designs.

The adjustable design allows you to fine-tune camber and track width, while our interchangeable roll center spacers provide the ability to correct suspension geometry on lowered vehicles. Maintaining proper ball joint positioning also helps preserve suspension articulation throughout its range of motion, minimizing unnecessary binding.

A factory-style ride height sensor mounting provision is incorporated into the design to retain proper sensor positioning as the arm is adjusted.

With the X3M/X4M being a heavier, higher center-of-gravity platform, maintaining proper front suspension geometry and rigidity is especially important for consistent handling and steering response.

Designed with both form and function in mind, the BTKUSA Front Lower Control Arms provide the strength, adjustability, and suspension geometry correction needed to properly set up the front end of your X3M/X4M.

Features

• CNC machined 6061-T6 billet aluminum control arms
• 17-4 H900 stainless steel double adjusters
• Adjustable camber
• Adjustable track width
• Interchangeable roll center correction spacers
• Optimized ball joint geometry for suspension articulation
• Increased rigidity compared to factory control arms
• Improved front suspension alignment adjustability
• Designed for lowered street and track applications
• Factory-style ride height sensor mounting provision
• Proudly manufactured in the USA 🇺🇸
• Sold as a complete pair

Applications

• BMW F97 X3M / X3M Competition
• BMW F98 X4M / X4M Competition

Sold as a complete pair.