Description Reviews Powerflex Universal Exhaust Mount! This a universal kit for any exhaust hanger in most cars. The bushing measures 2.125 x 2.125 and is 1.25 deep. The holes are 3/8 DIA and are about 2 5/8 apart. Powerflex polyurethane bushings are designed to decrease the amount of deflection in your car's suspension for better handling, more driver feedback, and better tire wear. Powerflex uses premium polyurethane materials for minimal NVH (noise, vibration, harshness) and increased longevity over the stock rubber bushings. Bushings come in pre-determined durometers (measured hardness) from Powerflex to work best in each particular location. The street bushing will work best for mostly everyone. They have been spec'd by Powerflex to be the best durometers for your application and are: 65A (Red), 70A (Yellow), 80A (Purple), and 95A (Black). Warranty: All Powerflex bushings are made in the UK and come with a lifetime, unlimited mile warranty.