American Made Racing Parts.
BTKUSA X3/X4 Rear Lower Control Arms
Introducing the BTKUSA Adjustable Rear Lower Control Arms for the BMW X3M/X4M & X3/X4 M40i.
🇺🇸 PROUDLY MADE IN USA
Starting with 20 LBS of billet aluminum and precision machining it down to just 7.4 LBS for the pair.
Engineered to increase rigidity, improve rear suspension adjustability, and provide greater control over suspension geometry, especially for lowered applications.
Every detail was designed with both performance and appearance in mind. From material sourcing to machining and finishing, the entire process is completed right here in the USA.
Art + Function + Innovation.
Art+
Function+
Innovation