Red Hots from Flowtech may be the best muffler value on the market today. The classic design includes thick, long-lasting, high heat Ceramic-Glass packing wrapped around a power louver baffle. Backpressure is decreased to increase flow, help boost power and they sound RED HOT! Red Hots are only available in a rich red finish, In your choice of 2 in., 2.250 in. and 2.5 in. outlet diameters.