The Energy Suspension - Peterbilt Exhaust Isolators are a practical and environmentally friendly solution for your exhaust system. Constructed of Hyper-Flex Polyurethane, these isolators are impervious to road salt, petroleum products, smog, ozone, and road contaminants. The kit includes two-piece bushings and one sleeve, ensuring a secure and durable installation. Choose from red or graphite (black) options to suit your preference. With their resilience and resistance to environmental factors, these isolators provide long-lasting benefits for your Peterbilt exhaust system.