Prothane 12-1103-BL RX7 Rear Sway Bar Bushing Kit 86-91 14mm Black Polyurethane

Upgrade your Mazda RX-7's handling performance with the Prothane 12-1103-BL Rear Stabilizer Bar Bushing Kit. Designed as a direct replacement for the factory rubber bushings, this kit uses firm polyurethane construction to dramatically reduce body roll, improve steering response, and restore suspension precision lost through worn or soft OEM components.

Stock rubber sway bar bushings deflect under load, allowing the stabilizer bar to shift and reducing its effectiveness. Prothane's polyurethane formula provides a significantly firmer interface between the sway bar and chassis, so the anti-roll bar works as intended — keeping your RX-7 flatter and more composed through corners.

Key Features:

• Fits 14mm rear stabilizer bar diameter on 1986–1991 Mazda RX-7
• Polyurethane construction for superior durability and performance over OEM rubber
• Grooved bore design retains Prothane Super Grease for smooth, squeak-free operation
• Black color finish (BL designation)
• Resists automotive fluids, UV exposure, and temperature extremes
• Direct bolt-on replacement — no modifications required
• Includes all hardware and grease needed for installation

Prothane polyurethane suspension components are a trusted upgrade for enthusiasts seeking improved handling without sacrificing daily drivability. The 12-1103-BL is engineered specifically for the 1986–1991 Mazda RX-7 rear suspension, making it a precise, confidence-inspiring replacement for tired factory bushings.