BTKUSA G8X/F8X Adjustable Front Lower Control
Description
BTKUSA G8X/F8X Adjustable Lower Control Arms
MADE IN USA 🇺🇸
BTKUSA BMW G8X Front Lower Control Arms (FLCA)
The BTKUSA G8X Front Lower Control Arms were engineered to improve front suspension geometry, increase rigidity, and provide significantly more alignment adjustment than the factory control arms.
Lowering the G8X chassis changes the factory suspension geometry and can leave the car with less-than-ideal alignment and roll center characteristics. This can contribute to uneven tire wear, reduced front-end response, and increased understeer. Our adjustable FLCA design gives you the ability to properly dial the front suspension back in for street, track, or aggressively lowered setups.
Each arm is machined from 6061-T6 billet aluminum for an extremely rigid yet lightweight construction. The arms are paired with 17-4 H900 stainless steel double adjusters, allowing for precise adjustment without the hassle of traditional jam-nut style designs.
Adjustment allows you to fine-tune camber and track width, while our interchangeable roll center spacers allow the ball joint position to be corrected for lowered vehicles. Maintaining the proper ball joint angle also allows the suspension to articulate correctly throughout its range of motion instead of introducing 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.
Designed with both form and function in mind, the BTKUSA FLCA provides the strength, adjustability, and suspension geometry correction needed to properly set up the front end of your G8X.
Features
• CNC machined 6061-T6 billet aluminum control arms
• 17-4 H900 stainless steel double adjusters
• Camber adjustment
• Track width adjustment
• Adjustable roll center correction
• Proper ball joint geometry for full suspension articulation
• Increased rigidity compared to the factory control arm
• Designed for lowered street and track applications
• Factory ride height sensor mounting provision
• Sold as a pair
Applications
BMW G8X M2 / M3 / M4 X DRIVE & RWD
BMW F8X M2/ M3/ M4 RWD
Sold as a complete pair.
BTKUSA G8X/F8X Adjustable Front Lower Control
FAQs
Answers to our most common questions below.
How Long Does Shipping Take?
All RVNG items ship within 1-3 days. If an item is out of stock the customer will be notified with the choice of a refund or an estimated timeline of delivery.
Do You Have Exhaust Parts For My Car?
We make a range of performance parts but we do not have something for every car. We choose to specialize in specific markets so we can always ensure we are selling the best products possible. As a small company who designs all new products and stocks all our items its hard to sell something for everyone but as we grow we are always looking to expand our catalog!
Do You Offer In Person Pick-Up & Installs In Cali?
Yes, We are located in Garden Grove in Orange County, California. We invite any of our customers to pick-up in stock items and for any install or car related work.
Will Installing These Parts Void My Factory Warranty?
Aftermarket performance parts can affect your factory warranty on related components under the Magnuson-Moss Warranty Act a dealer must prove the part caused the failure to deny a claim. We recommend speaking with your dealer or tuner. Our parts are precision-engineered to factory tolerances and we stand behind every product with our own Lifetime Warranty against defects and fitment issues.
Do These Parts Require a Tune?
Some parts particularly downpipes, intake kits, and fuel system upgrades strongly benefit from an ECU tune to see full performance gains and to prevent check engine lights. Parts like heat exchangers, oil coolers, and hardware do not require a tune. We recommend reaching out to us or your local tuner before purchasing if you're unsure.
What Is Your Return Policy?
We accept returns within 30 days of delivery on unused, uninstalled, and undamaged items in original packaging. Custom or made-to-order parts are non-returnable. To start a return, contact us at contact@rvngraceworks.com with your order number. Return shipping is the customer's responsibility unless the item arrived damaged or incorrect.
How Do I Know This Will Fit My Car?
Every RVNG product is developed and validated on the specific platforms listed. If your exact build year, model, or configuration isn't listed, contact us before ordering — we'll confirm fitment. We stand behind every part with our Fitment Guarantee: if it doesn't fit as described, we'll make it right.
If you have any questions, we're always welcome to help. We'll get back to you within 24 hours on weekdays.
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Shipping Information
All orders ship within 1-3 business days from our Garden Grove, CA facility.
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Customer Support
We're here to help. Reach out anytime and we'll get back to you within 24 hours on weekdays.
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FAQ's
Check out our FAQ section below for answers to our most common questions.
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Contact Us
Located in Garden Grove, CA. Stop by for pickup or install appointments — we'd love to meet you.