Powerflex PFF5-2501G Caster Radius Arm Bushes - BMW G20/G21 - Pair

Caster-adjustable front radius arm bushes for BMW G20/G21, supplied as a pair. Powerflex PFF5-2501G replaces the chassis-side bushes in the applicable original radius arms while adding an adjustment facility for a planned alignment setup.Caster adjustment, not camber adjustmentPowerflex specifies up to plus or minus 0.75 degrees of on-car caster adjustment. This is a different job from fitting a camber plate or changing rear toe. The final settings need to be measured with the complete suspension setup in place.BMW application and original referencesFor the listed G20 3 Series Saloon and G21 Touring applications, including the matching M340i mounting configuration. Relevant BMW arm references are 31106894667 / 31106894668, 31106894661 / 31106894662 and 31106879849 / 31106879850. This is not a G80 M3 product or a universal G-series conversion.Choose the exact variant PFF5-2501G: Road Series catalogue reference with caster adjustment. PFF5-2501GBLK: Black Series catalogue reference with caster adjustment. The price covers two mounting bushes, not one bush or two complete arms. Choose by the specification and original mounting, not colour alone. Uprated suspension bushes can alter noise and vibration, and adjustment cannot correct damaged arms or worn joints.Non-adjustable alternativeFor a bush refresh without caster adjustment, choose the PFF5-2501 front radius arm pair. Browse the Powerflex range for complementary upgrades.Follow the manufacturer's orientation and fitting instructions, then set the geometry. Confirm the car's original components before ordering; there is no blanket fitment guarantee.