Dynomax 52309 Exhaust Intermediate Pipe Combine state-of-the-art engineering with quality material to provide exceptional strength and durability Dynomax premium pre-bent pipe is manufactured with precision benders, and then fixture checked, insuring every part is a perfect fit. Pipe diameters are increased from OEM sizes to improve flow and increase power. Pipe diameters are increased from OEM sizes to improve flow and increase power. Quick and easy installation