Prothane 6-112-BL Black Rear IRS Subframe Bushing Kit

The Prothane 6-112-BL is a rear independent rear suspension (IRS) subframe bushing kit engineered in high-performance black polyurethane. Designed as a direct upgrade over deteriorating factory rubber bushings, this kit mounts between the IRS subframe and the chassis to restore and improve rear suspension performance.

Stock rubber subframe bushings wear out and crack over time, allowing unwanted subframe movement that leads to a spongy ride, chassis flex, and degraded handling precision. Prothane's polyurethane compound resists distortion, UV degradation, and road grime, maintaining consistent performance far longer than OEM rubber.

Key Features:

• High-performance black polyurethane construction — firmer than OEM rubber for reduced chassis flex and improved chassis feedback
• Graphite-infused black compound helps reduce the potential for squeaking during operation
• Direct-fit replacement — installs into factory bushing shells (original metal shells from factory bushings may need to be reused)
• Supplied pre-lube grease included — must use only the included grease to maintain bushing integrity and warranty
• Resistant to oil, road grime, UV exposure, and temperature extremes
• Lifetime warranty against defects in materials and workmanship for the original purchaser

Note: Red and black Prothane bushings are the same durometer hardness and will deliver identical performance. A slight increase in NVH (noise, vibration, harshness) compared to new OEM rubber is normal due to the firmer polyurethane material. Always apply the included grease during installation to ensure quiet, long-lasting operation.