Prepare your semi truck to be Ready for the Road Ahead , with the Power Products 5" Aluminized 90° Exhaust Elbow that efficiently directs fumes away from passengers. To increase engine performance and decrease noise levels, this replacement exhaust elbow pipes smoke away from the motor to increase performance - while decreasing noise levels. Fashioned with de-burred and finished end cuts for safe handling. FleetPride is your First Click in Heavy Duty .