Get your semi truck Ready for the Road Ahead with an effective way of dispersing fumes away from passengers, with the Power Products 4" Aluminized 90° Exhaust Elbow. With an angled design, this replacement exhaust elbow pipes smoke output away from the motor to increase performance and control noise levels. Manufactured with de-burred and finished end cuts for secure handling. FleetPride is your First Click in Heavy Duty .