Prothane 7-1157 Rear Stabilizer Bar Bushing Kit 17mm Polyurethane

The Prothane 7-1157 is a rear stabilizer bar (sway bar) bushing kit designed as a direct upgrade over factory rubber bushings. Sized for a 17mm (0.66 inch) rear sway bar, these bushings are precision-molded from Prothane's signature polyurethane compound for a firm, lasting grip that stock rubber simply cannot match.

Key Features:

• Polyurethane construction — significantly more durable than OEM rubber; resists warping, cracking, and compression over time
• Grooved bore design — internal grooves hold Prothane's Super Grease for smooth, quiet operation
• Secure sway bar grip — maintains consistent hold on the bar, preventing unwanted movement that causes body roll and handling loss
• Weather and chemical resistant — polyurethane does not break down from road grime, moisture, salts, or oils like rubber can
• Available in red or black — both colors share the same durometer (hardness) and deliver identical performance; black includes a small amount of graphite which may further reduce squeaking
• Includes Prothane Super Grease — supplied lubricant should be applied at installation to ensure quiet, long-term operation
• Made in the USA — manufactured to exact application-specific tolerances
• Lifetime warranty — Prothane guarantees against defects in materials and workmanship for the life of the original purchaser's vehicle

Upgrading to polyurethane sway bar bushings delivers a handling improvement comparable to installing a larger diameter anti-roll bar, at a fraction of the cost. By keeping the sway bar firmly seated, these bushings reduce body roll, improve cornering traction, and restore suspension responsiveness. Part number 7-1157 is also available in a 19mm size (PN 7-1158) for vehicles equipped with larger performance sway bars.