5" to 4" ALUMINUM REDUCER DOWNPIPE FLANGE W/ CLAMP - Brian Tooley Racing - BTR94646

BTR downpipe flange kits are available in mild steel stainless steel and aluminum in a variety of sizes to accommodate your turbo outlet and downpipe sizes to assist in making fabricating your exhaust system as easy as possible. They are also available with v-band clamps to get your project back on the track in one step! Check out out full selection of flanges and kits