Prothane 6-1133-BL Front Sway Bar Bushing Kit 1-3/8in Black Polyurethane

The Prothane 6-1133-BL is a front sway bar bushing kit designed for the Ford Mustang (1979–2004), fitting a 1-3/8 inch (35mm) diameter stabilizer bar. Available in black polyurethane, this kit is an ideal upgrade over factory rubber bushings for improved handling and chassis response.

Prothane polyurethane bushings are significantly firmer than OEM rubber counterparts, reducing deflection under cornering loads and maximizing the effectiveness of the stabilizer bar. The result is noticeably reduced body roll and more precise, confident handling — especially on performance-oriented Mustangs running aftermarket sway bars.

Key Features:

• Made from high-durometer polyurethane for improved firmness over stock rubber
• Grooved inner bore designed to retain Prothane super grease for quiet, squeak-free operation
• Fits 1-3/8 inch (35mm) diameter front sway bars — ideal for OEM replacement or aftermarket bar upgrades
• Available in black (6-1133-BL) or red (6-1133)
• Direct-fit application for 1979–2004 Ford Mustang front sway bar mounting locations
• Lifetime warranty backed by Prothane

This bushing kit is a straightforward performance upgrade for Fox Body, SN95, and New Edge Mustang owners looking to sharpen handling without a full suspension overhaul.