Peterbilt is now offering the Hendrickson Primaax EX severe-duty vocational air suspension system designed for vocational, severe service, and heavy-haul applications. The suspension system will be available on Peterbilt Models 567, 579, and 589.

The Primaax EX platform improves durability and performance, Peterbilt said, while delivering a substantial weight savings over competitive systems.

The suspension system features enhanced joint integrity and durability, improved handling, increased air spring capacity, and improved torque rod bushing walk-out resistance, according to Peterbilt. It will be available in capacities of 46,000 and 52,000 pounds with a 10-inch ride height and is compatible with drum and air disc brakes.

“The Primaax EX advanced suspension offering gives Peterbilt customers expanded options to configure their trucks with specific applications to meet their needs and the demands of the heavy-duty and vocational market,” said Jake Montero, Peterbilt assistant general manager, sales and marketing.