Prothane 7-1139 Rear Sway Bar Bushing Kit 23mm Polyurethane Red

The Prothane 7-1139 is a rear sway bar bushing kit designed as a direct performance upgrade over factory rubber bushings on GM S-Series and Blazer/Jimmy trucks. Sized specifically for a 23mm rear stabilizer bar, this kit includes stud-end to eye-bolt type end links and is available in red or black polyurethane.

Stock rubber sway bar bushings wear out over time, losing their grip on the bar and allowing unwanted movement that reduces the stabilizer bar's effectiveness. Prothane's polyurethane compound resists deformation, road grime, oils, and weather that cause OEM rubber to crack and deteriorate—delivering a longer-lasting, more consistent feel over the life of the vehicle.

Key Features:

• 23mm bore — fits OEM-diameter rear stabilizer bars on applicable GM S-Series and Blazer/Jimmy models
• Polyurethane construction — firmer and more durable than stock rubber; maintains shape and grip over time
• Grooved bore design — engineered to retain Prothane Super Grease for quiet, squeak-free operation
• Includes end link hardware — stud-end to eye-bolt type end links included for a complete installation
• Available in red or black — add suffix -BL to part number for black; both colors share identical durometer and performance characteristics
• Sold as a pair — complete rear axle kit

Prothane Super Grease is included and should be applied to the bushing bore at installation to ensure smooth rotation of the sway bar and prevent noise. Prothane sway bar bushings are backed by a lifetime warranty and are made in the USA.