Prothane 6-1158 Front Sway Bar Bushing Kit 34mm Red Polyurethane

The Prothane 6-1158 is a front sway bar bushing kit designed to replace worn or soft OEM rubber bushings with high-performance polyurethane. Engineered for a precise 34mm (1.34 in.) stabilizer bar diameter, these bushings restore and enhance the effectiveness of your front anti-roll bar for improved handling and reduced body roll.

Why Upgrade to Polyurethane?

Stock rubber sway bar bushings warp, crack, and lose their grip over time — especially when exposed to road grime, oils, and weather. Once that grip is lost, your sway bar loses effectiveness. Prothane polyurethane bushings maintain a secure, consistent grip on the bar and resist degradation, delivering performance that lasts the life of your vehicle.

Key Features:

• 34mm (1.34 in.) bore diameter — precision fit for OEM and performance stabilizer bars
• Polyurethane construction — resists breakdown from road grime, oils, and weather unlike rubber
• Grooved bore design — engineered to retain Prothane Super Grease for quiet, squeak-free operation
• Available in red or black — identical durometer/hardness; black includes graphite for added squeak resistance
• Includes Prothane Super Grease — apply at installation to lubricate the bushing bore
• Lifetime warranty — Prothane guarantees against defects in materials and workmanship for the life of the original purchaser's vehicle

Installation is straightforward — simply grease the bore thoroughly with the included Super Grease before installing to ensure quiet, long-lasting performance. These bushings are also compatible with larger-diameter high-performance aftermarket sway bars.