Description Reviews Powerflex Lower Engine Replacement Bushing R60 All4. This replaces the complete original bushing (small). This bushing has as lot less give than they standard rubber bushing for a firmer, more positive mount. 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. Powerflex grease is supplied with every dynamic product. We suggest using only this grease for lubrication. Due to grooves and knurls cast into the material to hold the lubricant, bushings will rarely need re-lubing. We do not suggest using an "anti-seize" product for lubrication. Warranty: All Powerflex bushings are made in the UK and come with a lifetime, unlimited mile warranty.