SPL Front Lower Control Arms – BMW M3 / M4 (G8x)

OVERVIEW

SPL Parts Front Lower Control Arms (FLCA) give the G8X BMW M3 and M4 roll center, camber and track width adjustment, with the correct ball joint angle for full articulation. The main arm is slotted so the factory pinch bolts can still be used, and the rotating clamps on SPL's exclusive Double Adjuster lock down camber and track width settings. No more jam nuts, and no more fumbling with multiple wrenches while trying to keep the bearings oriented correctly. The arms include a ride height sensor bracket that maintains the factory sensor location regardless of arm length, keeping the chassis electronics happy.

The Double Adjuster is machined from 4130 chromoly, gun drilled to reduce weight, then electroless nickel plated for corrosion resistance. Blue anodized titanium hardware shaves further unsprung weight without compromising strength, and stainless steel spacers are supplied to correct roll center on lowered vehicles. FK rod ends and high misalignment spherical bearings eliminate the flex and binding found in the OEM control arms while allowing smooth articulation.

SPECS

• Lightweight 6061-T6 billet aluminum construction with titanium hardware
• Electroless nickel plated 4130 chromoly Double Adjuster, gun drilled, for quick adjustment
• Adjustable for roll center, camber and track width
• Correct ball joint angle for full articulation
• Rotating Clamp design gives easy access to lock down alignment settings
• Low friction three-piece Teflon lined FK spherical bearings and heim joints / rod ends
• Multiple sizes of stainless steel roll center spacer for precise adjustment
• Slotted main arm allows the factory pinch bolts to be retained
• Ride height sensor bracket included to maintain the factory sensor location
• Sold as a pair (one pair per vehicle)
• Made in the USA

PARTS INCLUDED

• Two SPL Parts front lower control arms with Double Adjusters, FK bearings and titanium hardware
• Multiple sizes of stainless steel roll center spacer
• Ride height sensor brackets
• Complete kit as supplied by SPL Parts; see the installation instructions for the full bill of materials

TECH RESOURCES

Additional Parts Required

• Four-wheel alignment after installation — mandatory. Camber, track width and roll center all change when these arms are fitted.
• Professional installation is recommended; these are safety-critical front suspension arms.
• Corner weighting is recommended for track use.
• xDrive / AWD owners must use the AWD version instead: SPL BMW G8X Front Lower Control Arms M3/M4 AWD Version. This listing does not fit xDrive cars.

Installation

• SPL Parts SPL FLCA G8X front lower control arms — installation instructions (PDF)

Notes

• Rear-wheel-drive models only — this part does not fit xDrive / AWD cars. Confirm fitment with Speed Logic if you are unsure which drivetrain your car has.

PART NUMBER

• SPL FLCA G8X

VEHICLE APPLICATIONS