Allison Transmission is excited to announce a strategic collaboration with Mack Trucks, a major producer of heavy-duty trucks in North America. The partnership involves the selection of the Allison 4500 Rugged Duty Series™ (RDS) as the exclusive transmission for Mack Trucks' new compressed natural gas (CNG)-powered Granite® model. This partnership showcases Allison's ability to deliver high-performance solutions across diverse applications, regardless of the powertrain's fuel source.

The Allison 4500 RDS fully automatic transmission has been utilized in the Mack Granite diesel model for more than two decades. When Mack Trucks aimed to create a refuse collection vehicle that runs on an alternative fuel, they seamlessly integrated the proven 4500 RDS transmission with a 320-horsepower Cummins L9N engine. This combination resulted in the CNG-powered Mack Granite truck, providing customers with reduced emissions to meet upcoming regulatory standards.

Jonathan Randall, President of Mack Trucks North America, highlighted the achievement: "The CNG Granite model is a prime example of Mack's capability to produce tailored trucks that align with our customers' needs. Our refuse customers expressed interest in a CNG-powered Granite, and through collaborations with Allison and Cummins, we delivered a solution that embodies Mack's reputation for durability, reliability, driver comfort, and now with the added benefits of emissions and noise reduction."

This partnership underscores Allison's dedication to providing a range of propulsion solutions, including conventional, electric hybrid, and fully electric options, to assist customers in their efforts to minimize emissions.

Rohan Barua, Vice President of North America Sales, Global Channel and Aftermarket at Allison Transmission, emphasized the advantages of pairing Allison transmissions with natural gas engines: "Allison transmissions, when paired with natural gas engines, can reduce noise by up to 90% compared to diesel-powered vehicles. The CNG-powered Mack Granite enables customers to enhance fleet productivity, boost fuel efficiency, and reduce noise and emissions. We are proud to collaborate with Mack on this sustainability initiative."

For more insights into the advantages of Allison transmissions and how they optimize the performance of natural gas vehicles, please visit allisontransmission.com.

About Allison Transmission

Allison Transmission (NYSE: ALSN) is a leading designer and manufacturer of propulsion solutions for commercial and defense vehicles. It is also the largest global manufacturer of medium- and heavy-duty fully automatic transmissions that Enhance the Way the World Works. Allison products find application in a wide range of contexts, including on-highway trucks (distribution, refuse, construction, fire and emergency), buses (school, transit, and coach), motorhomes, off-highway vehicles and equipment (energy, mining, and construction applications), and defense vehicles (tactical wheeled and tracked). With roots dating back to 1915, the company is headquartered in Indianapolis, Indiana, USA. It operates in over 150 countries, with regional headquarters in the Netherlands, China, and Brazil, as well as manufacturing facilities in the USA, Hungary, and India. Allison also maintains global engineering resources and independent distributor and dealer locations worldwide. For more information, visit allisontransmission.com.

For media inquiries, please contact: Claire Gregory Director, Global External Communications Claire.Gregory@allisontransmission.com (317) 694-2065

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