PFR5-504-21H - PowerFlex Front Sway Bar Bushing - 21 mm - E24, E28 - M30, S38
PowerFlex Front Sway Bar Bushing - 21 mm - E24, E28 - M30, S38
In high-performance driving and competitive motorsport, chassis precision is everything. Factory rubber anti-roll bar bushings degrade over time, leading to unwanted deflection, delayed steering response, and unpredictable body roll.
In historic motorsport and high-performance classic grids, maintaining precise suspension geometry without destroying the period-correct aesthetic is a constant balancing act. The Powerflex Heritage Series Bushing delivers track-validated deflection control for iconic E28 and E24 chassis, completely eliminating the deflection common to aged OEM rubber.
Engineered specifically for the purist racer and high-end restomod builder, the Heritage Series utilizes Powerflex’s advanced road-and-track durometer polyurethane but features a subtle dark grey finish. It mimics the appearance of a factory rubber component while providing the sharp turn-in, reduced body roll, and predictable mid-corner balance required on the limit.
Performance Engineered benefits:
Zero-Deflection Geometry: Replaces compliant factory rubber to eliminate dynamic toe and camber changes under heavy lateral cornering loads, optimizing the efficiency of your 21mm anti-roll bar.
Heritage Aesthetics: Formulated in a stealth dark grey finish to pass strict vintage scrutineering and satisfy concours-level preservation standards, avoiding the bright colors of modern poly bushings.
Advanced Materials Science: Engineered to withstand structural degradation from road grime, oils, and high-temperature track cycles.
Optimized NVH Control: Specially formulated compound increases roll stiffness and transient response without introducing the harsh, unmanageable cabin vibration of solid or metallic spherical mounts.
Fitment Note: We recommend measuring your rear factory or aftermarket sway bar to determine which size of bushings are required for your vehicle. Sway bar sizes can differ depending on factory suspension packages and aftermarket sway bar brands.
Prop 65 Warning
Cross Reference
31352225419
PFR5-504-21
Product Q&A
Lifetime Replacement
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
E24
M6
S38 3.5L
Use vehicle selector to confirm fitment
BMW
E28
535i
M30 3.4L
For Vehicles Equipped with Sport Suspension
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
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