Mack Trucks HAULMAXX EX Suspension Now Available

Mack Trucks announced today that the Mack LR and Mack TerraPro models are available to order with the optional HAULMAXX EX suspension system.

“The newly available HAULMAXX EX suspension on our cab-over models gives our customers more choice and offers increased capability offering capacities of 40,000 lbs., 46,000 lbs., and now 52,000 lbs., with up to a 75,000-lb. site rating,” said Josh Seiferth, Mack Trucks cabover product manager.

“The heavy-duty rubber suspension also increases durability and maximizes the life of the components for improved uptime and total cost of ownership for the customer.” 

The HAULMAXX EX features a progressive load spring system that adjusts to the load. Angled bolster springs and progressive load springs provide stability for demanding applications. The suspension design requires no lubrication, has fewer bushings to maintain and features an integrated jounce stop that protects the rubber components from compression, reinforcing the vehicle’s durability.     

Mack LR and TerraPro models equipped with the HAULMAXX EX suspension offer increased tire clearance and up to 17 inches of diagonal wheel articulation for off-road mobility on challenging terrain often encountered by vocational trucks. The tire clearance was improved on the HAULMAAX EX to include packages with 315 tires and 9-in. steel wheels, while continuing to meet the SAE standard for tire chain clearance.   

The Mack LR model is designed to meet the challenges of refuse customers needing maneuverability, productivity and visibility. The LR model comes standard with the Mack 11-liter MP7 engine, delivering up to 355 hp and 1,260 lb.-ft. of torque.     

Mack’s rugged TerraPro model enables customers to pack maximum payload into a compact footprint. The TerraPro is available with the Mack MP7 and 13-liter Mack MP8 engine with up to 505 horsepower and 1,869 lb.-ft. of torque, as well as the Mack mDRIVE automated manual transmission.    

The HAULMAXX EX suspension replaces the HAULMAAX and HN suspensions previously available on these models.     

Both the LR and TerraPro models are standard with Mack GuardDog Connect integrated telematics solution that monitors the truck to help prevent unplanned downtime events.