This is a stainless steel muffler that has baffling inside with fiberglass packing, they can be used on anything from hot rods to motorcycles. They have a 2 inch ID on the inlet and the canister is 14 inch long, the outlet is 2 inch and the canister is 4 inch OD. They look and sound great. Sold each. Fits VW Sand Rail # CPR251113-SS-SR