TRIANGLE SUSPENSION 552-TXL Tapered Extra Leaf, Navistar Front, Width: 4, SE: 30, LE: 30, Arch 5; Additional Spring Capacity: 2,100 lbs.; For: 55-118, 55-120, 55-144, 55-150, 55-152, 55-1176, 55-1188, 55-1190

Since 1919, Triangle Suspension Systems Co.® has set the gold standard for steel leaf springs. With generations of spring shop customers going back for more than 7 decades, Triangle Suspension has made a name for itself for its use of high-quality materials that are backed by ISO-compliant manufacturing processes. Their catalog covers a wide range of applications, including leaf spring assemblies, air beams, and helper springs for light, medium, and heavy duty vehicles. They also offer spring repair components and custom-engineered spring to fill almost any niche. All their products are manufactured in-house in their DuBois, PA, manufacturing facility and distributed across the United States and beyond.