Dig Deeper: How to Choose the Right Truck Suspension
Peterbilt Adds Vocational Air Suspension System
Peterbilt is now offering the Hendrickson Primaax EX severe-duty vocational air suspension system designed for vocational, severe service, and heavy-haul applications.
August 15, 2023
Peterbilt will now offer what it calls a severe-duty air suspension system for Models 567,579, and 589.
Photo: Peterbilt
1 min to read
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.
More Equipment
EPA 2027 Uncertainty Slows Truck Orders
Improving freight rates may have many trucking fleets ready to buy new trucks, but they're struggling to figure out what those trucks will cost — or even when they'll be available.
Read More →
Kodiak Lines Up Fleets for Driverless Trucking
An agreement for 75 trucks, a new Texas freight lane, and progress on safety validation move Kodiak closer to its planned driverless highway launch.
Read More →
How GP Transco Builds Fuel Savings a Fraction at a Time
Aerodynamic specs, solar panels, and driver incentives help GP Transco turn small efficiency gains into savings it can reinvest in its people.
Read More →
More Trailer Data Through the Same Seven-Way [Video]
Can trucking’s standard seven-way connector handle more cameras and trailer data? Grote’s Adam Slade shows HDT how the company is using new technology with its 4See trailer system, not only to add a new backup camera but also to expand other capabilities — without adding another connection.
Read More →
Grote: More Cameras, Same Seven-Way Connector
The next-generation 4See rear-view backup camera from Grote uses the standard seven-way connector and supports additional cameras and other trailer data.
Read More →
Trucks at ATA's 2026 MC&E in Charlotte, North Carolina [Photos]
From rigs decked out in patriotic America's 250 paint schemes to autonomous trucks and more, check out these photos from ATA's 2026 Management Conference & Exhibition.
Read More →
Help HDT Find Trucking’s Top Products
Have you come across a new product that could make a difference for trucking fleets? Nominate it for HDT’s 2027 Top 20 Products Awards by November 9.
Read More →
Volvo Unveils New VNX Heavy-Haul and Vocational Truck
Volvo Trucks has launched the VNX, a new vocational truck also available as a tractor in day cab and two sleeper configurations, with one heavy-haul model. The Volvo VNX is powered by Volvo's D13 platform, which delivers up to 540 horsepower and 1,950 pound-feet of torque and is EPA 2027-compliant.
Read More →
How GP Transco Cuts Trucking Fuel Costs, a Tenth of a Gallon at a Time
What’s another tenth of a mile per gallon worth? GP Transco shares how equipment upgrades and driver coaching turn small gains into meaningful fuel savings.
Read More →
Electric Yard Tractors Move Beyond Pilots
Operating-cost savings have overtaken sustainability goals as the leading reason surveyed fleets are adopting battery-electric terminal tractors, according to new NACFE research.
Read More →