SPL Parts SPL FE F8X Adjustable Front Sway Bar End Links BMW F8X/G8X M2 M3 M4

Vehicle Fitment

• 2016-2021 BMW M2 (F87, 3.0L S55 Twin-Turbo I6, RWD) - Front
• 2015-2020 BMW M3 Sedan (F80, 3.0L S55 Twin-Turbo I6, RWD) - Front
• 2015-2020 BMW M4 Coupe (F82, 3.0L S55 Twin-Turbo I6, RWD) - Front
• 2015-2020 BMW M4 Convertible (F83, 3.0L S55 Twin-Turbo I6, RWD) - Front
• 2021-2026 BMW M3 Sedan (G80, 3.0L S58 Twin-Turbo I6, RWD/xDrive AWD) - Front
• 2021-2026 BMW M4 Coupe (G82, 3.0L S58 Twin-Turbo I6, RWD/xDrive AWD) - Front
• 2021-2026 BMW M4 Convertible (G83, 3.0L S58 Twin-Turbo I6, RWD/xDrive AWD) - Front
• 2023-2026 BMW M2 Coupe (G87, 3.0L S58 Twin-Turbo I6, RWD) - Front

Fitment Notes

• Fits the front sway bar position only on all F8X and G8X M-series vehicles. For the rear sway bar position, see SPL RE F8X (sold separately).
• All F8X chassis variants (F80, F82, F83, F87) are rear-wheel drive only - no xDrive variants exist for these platforms.
• G8X chassis (G80, G82, G83) are available in both RWD and xDrive AWD; G87 M2 is RWD only. This endlink is compatible with all drivetrain configurations on G8X.
• With OEM shocks installed, verify the distance between the sway bar and shock mount falls between 11.4" and 12.9" before ordering. SPL cannot confirm fitment with aftermarket shocks or coilovers, as the mounting location may have shifted.
• Replaces OEM part numbers 31302284643 (left) and 31302284644 (right).
• Sold as a pair (one left, one right) covering the front axle on one vehicle.

Features

• Massive Teflon-lined FK 1/2" spherical bearings deliver the highest load capacity available at this endlink size, providing long service life under the intense lateral forces generated by stiffer aftermarket sway bars and high-performance driving.
• Custom heat-treated chromoly high misalignment studs provide up to 65 degrees of articulation capability, keeping the endlink completely bind-free through full suspension travel and across all adjustment holes on multi-position aftermarket sway bars.
• Length-adjustable design eliminates sway bar preload caused by spring settling, corner weighting, or ride height adjustment - allowing the sway bar to be set at a true horizontal angle for maximum roll-resistance effectiveness and balanced cornering behavior in both directions.
• Black anodized 6061-T6 aluminum turnbuckles with opposing left-hand and right-hand threaded rod ends enable fast, precise on-car length adjustment - turn the turnbuckle to the target length and snug the jam nuts without removing the endlink from the vehicle.
• Compatible with OEM suspension on both F8X and G8X platforms as a direct bolt-in replacement, requiring no modification for stock-height builds.
• Improves sway bar tuning flexibility by enabling the driver to set the correct bar angle for their specific spring rate, ride height, and corner weight setup.
• Reduces the asymmetric roll resistance that results from unresolved OEM fixed-length endlink preload, producing more predictable and consistent cornering performance left-to-right.
• Designed and manufactured entirely in the USA by SPL Parts' in-house engineering and machining team.

Specifications

• Bearing: Teflon-lined FK 1/2" spherical bearing (per endlink)
• Stud Material: Heat-treated chromoly steel, high misalignment design
• Turnbuckle Material: 6061-T6 aluminum, black anodized
• Maximum Articulation Angle: 65 degrees
• Adjustment: Length-adjustable via opposing LH/RH threaded rod ends, on-car adjustable
• OEM Sway Bar-to-Shock Mount Range (stock suspension): 11.4" to 12.9"
• Position: Front sway bar only
• F8X Drivetrain: RWD only (F80/F82/F83/F87)
• G8X Drivetrain: RWD and xDrive AWD (G80/G82/G83); RWD only (G87)
• Replaces OEM Part Numbers: 31302284643 (left), 31302284644 (right)
• Country of Manufacture: USA
• Part Number: SPL FE F8X

Included Components

• 2x Adjustable front sway bar endlinks (one left, one right)
• 2x Teflon-lined FK 1/2" spherical bearings (pre-installed)
• 2x Heat-treated chromoly high misalignment studs (pre-installed)
• 2x Black anodized 6061-T6 aluminum turnbuckles
• 4x Jam nuts (two per endlink for length-locking)

Product Description

The SPL Parts SPL FE F8X is a PRO-series adjustable front sway bar endlink engineered for the BMW F8X and G8X M-series platforms, covering the M2, M3, and M4 across both generations. The OEM front endlinks on these vehicles are fixed-length units that introduce sway bar preload whenever spring settling, driver weight, corner weighting, or ride height change moves the sway bar away from its ideal horizontal position. This preload causes the bar to generate unequal roll resistance depending on which direction the car is turning - a characteristic that becomes more pronounced with stiffer aftermarket sway bars, track-tuned spring rates, or lowered ride heights. The SPL FE F8X resolves this entirely: the black anodized 6061-T6 aluminum turnbuckle uses opposing left-hand and right-hand threads so the driver can dial in the exact length needed to hold the sway bar horizontal at any ride height and lock it with the jam nuts - on the car, without tools.

The Teflon-lined FK 1/2" spherical bearings used in this endlink provide the highest static radial load capacity available at this endlink size - significantly higher than the smaller bearings found in budget alternatives. This directly translates to greater durability and consistent performance under the elevated lateral forces generated by aftermarket sway bars on the F8X and G8X platforms. Custom heat-treated chromoly high misalignment studs deliver up to 65 degrees of articulation, keeping the endlink bind-free across the full suspension travel range and when the sway bar is positioned at different adjustment holes on multi-position bars. With OEM suspension, the sway bar-to-shock-mount distance should be verified to fall between 11.4" and 12.9" to ensure proper fit; SPL recommends checking this measurement before ordering if aftermarket coilovers or shocks are installed, as mounting locations may differ.

The SPL FE F8X is equally suited for aggressive street use, track days, autocross, and dedicated time attack or circuit racing builds on any F8X or G8X M-series vehicle. It is a direct bolt-in replacement for OEM part numbers 31302284643 and 31302284644 on stock-height builds and requires no modification for standard suspension setups. For the rear sway bar on the same platforms, SPL offers the matching SPL RE F8X endlink. Sold as a pair. Designed and manufactured entirely in the USA by SPL Parts.