Hendrickson Truck Commercial Vehicle Systems announced that they have partnered with Peterbilt to offer PRIMAAX EX – the severe-duty vocational air suspension system as a part of the chassis enhancements for the Peterbilt 365, 367, 389, 567, 579 and 589 models. PRIMAAX EX will be available in capacities of 46,000 and 52,000 pounds, have a 10 inch ride height and is compatible with drum and air disc brakes.

“Peterbilt is excited to expand our partnership with Hendrickson by adding the PRIMAAX EX to our suspension offerings.”

said Jake Montero, Assistant General Manager – Sales and Marketing for Peterbilt Motors.

The PRIMAAX EX suspension is designed specifically for the rigorous demands of vocational and severe-service such as construction, refuse, mixer, logging and heavy-haul applications. The system features a robust structural design which enhances durability, reliability and handling. PRIMAAX EX also incorporates optimized suspension geometry which helps minimize driveline vibrations and control suspension windup and corresponding frame rise. Premium heavy-duty rubber bushings require no lubrication and are performance tested for longer service life. The suspension provides enhanced stability and handling for vehicles with heavy loads and high centers of gravity confidently negotiate tight turns with minimal sway.

“PRIMAAX EX has grown tremendously in popularity over the years and has become widely accepted by fleets throughout the industry as their preferred 100% off-highway approved vocational air suspension for multiple severe-duty applications. We are excited to partner with Peterbilt to expand the availability of PRIMAAX EX across the full breadth of their vocational model lineup to bring the tremendous advantages of PRIMAAX EX to more Peterbilt customers.”

says Sean Whitfield, Director of Marketing at Hendrickson Truck Commercial Vehicle Systems.

PRIMAAX EX offers a full range of suspension scalability from 23,000-pound single axle configurations up to 78,000-pound tridem setup.