Exhaust Insulating Heat Wrap BLACK Roll DEI Design Engineering Inc Motorcycle Pipes EXHAUST THERMAL WRAPBLACK by DEI Design Engineering, Inc. Wrapping headers and down pipes is an important first step in controlling unwanted underhood radiant heat. Keeping exhaust gases hotter within the exhaust system helps in decreasing exhaust density and increases exhaust flow. This improves exhaust scavenging resulting in cooler air intake temperatures for an improvement in performance and a gain in horsepower. DEI exhaust wrap is used by many pro teams in all types of racing: oval track, road course, drag, baja, super bike, off-shore, jet-ski, snowmobile, and go-cart. But it's not just for racing anymore.Wrapping the exhaust on your motorcycle, street rod, muscle car, RV, heavy duty truck or tow vehicle can add horsepower and reduce unwanted heat in the engine and driver compartment. Reduce under hood temperatures a realistic50% Improves horsepower Withstands 1200F direct/2000F radiant Only exhaust wrap with installation guide lines Added durability and heat retention Keeps exhaust heat under wrapsProtects driver/rider/passenger and mechanics from b