Prothane 12-1104 Front Sway Bar Bushing Kit 21mm Polyurethane

The Prothane 12-1104 is a front stabilizer bar bushing kit designed for the Mazda 3 (2004–2005), featuring a precise 21mm (0.83 inch) bore to match the OEM front sway bar diameter. These polyurethane bushings are a direct upgrade over the factory rubber units, delivering firmer support, reduced body roll, and improved handling responsiveness.

Key Features:

• Polyurethane construction resists degradation from road grime, oils, and weathering that breaks down stock rubber bushings over time
• Grooved bore design retains Prothane Super Grease for quiet, squeak-free operation during the sway bar's rotational movement
• 21mm bore size engineered to tightly grip the OEM front stabilizer bar for maximum anti-roll performance
• Available in red or black — both options use the same durometer polyurethane compound for identical performance
• Made in the USA and backed by a Prothane Lifetime Warranty against defects in materials and workmanship
• Includes Prothane Super Grease for proper installation lubrication

Upgrading to polyurethane sway bar bushings keeps the stabilizer bar firmly in place during cornering, maintaining better tire contact with the road and reducing the body roll that worn OEM rubber allows. The performance improvement is comparable to installing a larger diameter sway bar, at a fraction of the cost. Proper greasing at install is essential for quiet, long-lasting performance.