Prothane 4-1131-BL Rear Sway Bar Bushing Kit Black 14mm

The Prothane 4-1131-BL is a rear stabilizer bar bushing kit designed for 14mm sway bars. Manufactured from premium-grade polyurethane, these bushings are a direct upgrade over the factory rubber units, delivering improved suspension response and reduced body roll.

Stock rubber sway bar bushings deteriorate over time, becoming soft and pliable — allowing the stabilizer bar to shift under load and diminishing its effectiveness. Prothane's polyurethane formulation resists compression and maintains its shape, ensuring the sway bar performs as intended throughout its service life.

Key Features:

• Premium-grade polyurethane construction — firmer and more durable than OEM rubber
• Grooved bore design retains Prothane Super Grease for smooth, quiet operation
• Black color with graphite added to the polyurethane compound for additional squeak resistance
• Precision-molded for an accurate, rattle-free fit on 14mm rear stabilizer bars
• Sold as a kit — includes a pair of bushings
• Backed by Prothane's lifetime warranty against defects in materials and workmanship

Installation requires the use of the included Prothane Super Grease to properly lubricate the bore and prevent noise. Prothane polyurethane bushings are a proven performance suspension upgrade that improve handling precision and cornering stability over worn or standard-replacement rubber bushings.