F32 F33 F36 front radius arm caster adjustable bushes PFF5-1901GBLK

For F32/F33/F36 owners chasing precise caster adjustment without compromising daily drivability or track-day repeatability - these Powerflex Black Series bushes go in the front radius arm to chassis mounting point, where factory rubber lets geometry drift under load.

• Fit F32, F33, F36 (2013-2019) - not E92, not G22, not F82
• Enable caster fine-tuning for fast road, stage 1 or track day setups - no camber plates required
• Made from 95A Black Series polyurethane: stiffer than OEM, more compliant than solid bush options - ideal for daily driver + show car balance
• Direct replacement for OEM 31126852991 / 31126852992; includes hardware and grease
• Also searched as: BMW F3x caster bush, F36 suspension upgrade, F33 radius arm mod, poly radius arm bush, track day front end