Rear adjustable lower wishbone arms for M2 (F87, G87), M3 (F80, G80), M4 (F82, G82). A must-have with coil over suspensions!
The BimmerWorld View: BMW engineered a lot of anti-squat kinematics into the F8X and G8X rear suspension and it's not ideal when switching to any type of performance suspension, but especially coil overs. The anti-squat manages a lot of the suspension loads through the subframe and chassis, not through the springs and shocks. With these arms we can change the anti-squat behavior for road course or even drag racing use. And precision rod ends will reduce bushing deflection and make the car quicker to react.
This part replaces BMW part number 33322284534 (33 32 2 284 534) and is described as a rear wishbone (aka traction arm) for F87 M2, G87 M2, F80 M3 sedan, G80 M3 sedan, F82 M4 coupe, and G82 M4 coupe. This is an adjustable version with precision rod ends and bearing spacers that gives more tunability to your rear alignment than simple adjustable arms. These tubular race arms are much more precise and use FK spherical bearing rod ends for near-zero play once set.
As an added optional feature we include bearing spacers for the inner rod joint. The spacers can be placed above or below the rod joint to change the anti-squat behavior in the rear suspension. BMW designed the rear suspension with anti-squat - load forces from acceleration and cornering are transferred to the chassis instead of the shocks and springs. This allowed BMW to use relatively soft shocks and springs for a decent ride on the street. But for track use we want less load going into the chassis (which has an infinite spring rate) and more to be managed by the springs and shocks (coilovers). Our wishbone arms include 3 settings: no change from stock, reduce anti-squat for road courses, or add more for launching or drag racing.
+ Tune anti-squat behavior in the rear suspension
+ lightweight tubular race arms are much lighter than factory
+ 6061-T6 aluminum rod
+ High-precision, low-friction Teflon-lined FK rod ends
+ Jam nuts for quick and easy adjustment and almost impossible to over-tighten
+ Replaces BMW part number 33322284534
Professional installation and setup very strongly recommended.
Made in the USA.
Also fits M2 CS Racing, F82 M4 GT4, and G82 M4 GT4, however, these were built to homologation rules and these arms will change that - be sure to consult with your series rules before use.
Designed for track/racing use only. Use of solid and spherical bushings will have more noise and harshness than any other material and are not recommended for street use.
BMW Fitments:
2 Series
F87 (16-18) > M2
F87 LCI (19-21) > M2 Competition
F87 (19-21) > M2 CS Racing
2 Series
G87 (2023+) > M2
3 Series
F80 (15-19) > M3
3 Series
G80 (2021+) > M3
G80 (2021+) > M3 Competition
G80 (2021+) > M3 Competition xDrive
4 Series
F82 / F83 (15-20) > M4
F82 / F83 (15-20) > M4 GTS
F82 / F83 (15-20) > M4 GT4
4 Series
G82 (2021+) > M4
G82 (2021+) > M4 Competition
G82 (2021+) > M4 Competition xDrive
