BMW X3 E83 rear upper arm inner bushes, Powerflex PFR5-4617 (pair)

Direct-fit polyurethane replacement for the rear upper control arm inner mounting points on BMW X3 E83 (2003-2010). Not rubber. Not OEM-spec. A measured upgrade for fast-road or track-day use where precision matters more than plushness.

• Replaces OEM part 33321092247 - no machining, no adaptors
• Higher-durometer compound sharpens rear axle response and resists deflection under cornering load
• Reduces toe and camber shift during hard acceleration or braking
• Pair supplied - fits both sides of the rear axle
• Lifetime warranty from Powerflex