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Triangle is the source
for undercarriage parts

When it comes to undercarriage parts for light, medium and heavy duty vehicles, nobody beats Triangle. With more than 10,000 spring, suspension, steering and air spring part numbers, Triangle covers the widest range of on-highway and specialty vehicle applications.

Recognized, product specific brands

The Triangle line-up of products - Flagg Suspension Parts, Triangle Springs and Triangle Air Springs are established, respected names in the market. Each brand services a unique segment of the vehicle, while together they form a team that is unsurpassed in undercarriage product support.

Quality you can trust

All Triangle products are guaranteed, period. Plus, Triangle utilizes only one set of specifications and makes superior "OE" and "Aftermarket" product. Why settle for less?

Technical help when you need it

From the simplest product interchange, to specing a new suspension system, Triangle's technical support staff is available to assist you.