Triangle Suspension Systems Celebrates First 100 Years

 In 2019 Triangle Suspension Systems, Inc. celebrates its first 100 years as a major supplier to the heavy-duty aftermarket.  During a press conference held here today in conjunction with Heavy Duty Aftermarket Week (HDAW 2019) Triangle gave an overview of the company and presented plans for the future.
Triangle Spring Company was founded in 1919 in Pittsburgh, PA and relocated from the Golden Triangle to their current location in DuBois, PA in 1927.  Today, Triangle Suspension Systems is a Marmon Highway Technologies®/Berkshire Hathaway company servicing the heavy-duty aftermarket through a loyal customer base of over 1400 authorized dealers.  Triangle branded products include Triangle leaf springs, Flagg suspension components and Continental/ContiTech air springs for heavy, medium and light duty trucks and trailers.

  • Triangle springs are manufactured in DuBois, PA and have been American made since the company’s founding in 1919.  There are currently more than 6,000 multi-leaf spring and parabolic (taper) spring active SKU’s available to the aftermarket.  The company also offers custom engineered solutions for unique applications.
  • Flagg suspension parts with over 7,000 active part numbers covers the entire suspension undercarriage. 
  • Continental/ContiTech air springs are distributed by Triangle through a 20+ year relationship. 

Triangle consistently provides value to their customers with high-quality products, problem solutions, strong technical support, engineering expertise and a commitment to reliability and on-time delivery. “We believe people are our most important asset,” stressed George Koerner, president of Triangle Suspension Systems.  “Customers, employees, and suppliers have all played a major part in our success and we know it doesn’t happen without all of them.”
Continued investment in product development, innovation, manufacturing, and technology as well as expanding their distribution network are on the horizon as Triangle embarks on their second 100 years. 
Triangle is exhibiting their products and services in Booth 215 during HDAW 2019.
Visit to find out more about their products and where they are available. 

About Triangle Suspension Systems, Inc

Triangle Suspension Systems, Inc. is a leader in providing quality undercarriage products for heavy, medium & light duty trucks and trailers in the North American market with a nationwide network of over 1400 distributor locations.  Their USA-manufactured products are known for consistent quality.  Broad product coverage of springs, suspension parts and air springs are backed by ISO registered facilities and strong employee commitment to delivering quality products. Triangle Suspension Systems, Inc. is a Marmon Highway Technologies®/Berkshire Hathaway company. Marmon Highway Technologies (MHT) supports the highway transportation industry worldwide with a wide range of high-quality products and services.