Prothane 8-1146-BL Front & Rear Sway Bar Bushing Kit Black 21.5mm

The Prothane 8-1146-BL is a complete front and rear polyurethane sway bar bushing kit designed to replace the factory rubber bushings on the Acura NSX. Upgrading to Prothane's firm polyurethane construction restores and enhances sway bar efficiency, reducing body roll and improving handling response compared to worn or soft OEM rubber bushings.

Key Features:

• Polyurethane construction — firmer than OEM rubber for improved sway bar grip and handling performance
• Split-design bushings — slip over the sway bar without requiring full bar removal, saving installation time and effort
• 21.5mm bore diameter — engineered specifically for the factory NSX stabilizer bar diameter
• Grooved bore design — holds Prothane Super Grease for quiet, low-friction operation
• Greaseable brackets included — allows re-greasing of bushings while still mounted on the vehicle for extended service life
• Black color with graphite additive — the black polyurethane formula includes a small amount of graphite to further resist squeaking
• Available in black or red — both colors share the same durometer hardness and performance characteristics
• Lifetime warranty — Prothane guarantees against defects in materials and workmanship for the life of ownership

Prothane Super Grease is included with the kit. Proper lubrication at the time of installation is essential to prevent noise. The polyurethane material will not compress or deform like stock rubber, keeping the sway bar firmly located and maximizing anti-roll bar effectiveness.