© 2018 Triangle Suspension Systems, Inc. All rights reserved. Images used with permission.

YOUR MARKET LEADER SINCE 1919

YOUR UNDERCARRIAGE PARTS SOURCE

FOR HEAVY, MEDIUM & LIGHT DUTY TRUCKS AND TRAILERS.

Since 1919, the TRIANGLE name has been synonymous with steel leaf springs.  Originally the company was located in the “Golden Triangle” section of Pittsburgh, and in 1927 the base of TRIANGLE’s operations moved to DuBois, PA. TRIANGLE’s market share increased through steady organic growth thru the years.  A series of strategic acquisitions put TRIANGLE firmly on the road to becoming a leader in undercarriage products for heavy, medium & light duty trucks and trailers in the North American market.

"Triangle Suspension exudes a passion for fleet uptime, dedication to customer service, technical support and inventory fortitude. They MAKE IT HAPPEN every day. Hendrickson and Triangle have enjoyed a promising partnership spanning decades of delivering Hendrickson Genuine Parts to the market place!"

David McCleave, Hendrickson

A veteran workforce, Lean Manufacturing approach and Continuous Improvement Kaizen teams all contribute to the USA manufactured product known for consistent quality.  Broad product coverage of springs, suspension parts and air springs backed by ISO registered facilities and strong employee commitment to delivering quality products guarantees that TRIANGLE Suspension Systems will remain a market leader for years to come. 

ALWAYS NEARBY: NATIONWIDE NETWORK OF OVER 1,400 DISTRIBUTOR LOCATIONS
YOUR MARKET LEADER SINCE 1919
  • Our loyal customer base tells the story of our commitment to service.

  • We have generations of spring shop customers going back over 70 years.

  • Your stock orders placed by 3PM ship the same day! UPS can handle those late day “need to have” orders.

  • Have a unique problem? Our Engineers can spec and design answers for you.

  • Always a friendly voice when you call for Service and Tech Support!

  • The TRIANGLE culture – Do what it takes to deliver quality products to our Customers every day.

CUSTOMER SERVICE

"I have done business for over 30 years with Triangle Suspension. The parts and springs are reliable and the service is excellent. They do business as it should be done."

Matt Andrus, Lafayette Spring

  • Triangle’s name is synonymous with QUALITY.

  • A quality system validated by ongoing ISO Certification.

  • Triangle’s culture of quality spans the entire company beginning with highly trained and experienced employees.

  • We consistently deliver quality backed by an outstanding warranty.

QUALITY

 
TRIANGLE’S PRODUCT RANGE COVERS THE FOLLOWING OEM APPLICATIONS:

Advance Mixer

American LaFrance

Autocar

Binkley

Blue Bird Bus

Capacity

Chalmers

Chevrolet

City Welding

Crane Carrier

Crown Coach

Dana/Spicer

Dodge

Eaton

Ford

Freightliner Fruehauf GMC Great Dane Hendrickson Hendrickson Turner Hino

Hutch

International/Navistar

Ridewell

Sprinter

Thomas Bus

Toyota

Trailmobile

UD/Nissan

Volvo/White

Watson & Chalin Western Star

Isuzu

Jeep

Kenworth

Mack

Mercedes

Mitsubishi

Neway/Holland Oshkosh Ottawa/Kalmar

PagePeterbilt Reyco/Transpro

MORE AND MORE FLEETS
ARE RIDING ON FLAGG
 

Trust the name that is setting the industry standard for availability, dependability and technical support. Whether it’s for the front-end or drive axle on a truck, a trailer axle or auxiliary axle, one call to TRIANGLE gets you the right part for the job. TRIANGLE offers over 7,000 FLAGG suspension and steering parts for all makes of vehicles including:

THE NEXT LEVEL OF HEAVY DUTY

 

Many FLAGG suspension parts are also offered in HEAVY DUTY versions that can withstand even more abuse in severe situations. Rubber bushings, heavy duty torque rods and bronze king pin bushings are some of the examples of the heavy duty alternatives available.

Front End Components:

  • King pin sets

  • Ball joints

  • Tie rod ends

  • Drag links

 

Leaf Spring Components:

  • Spring eye bolts and pins

  • Spring pin bushings

  • Spring center bolts & hardware

  • Shackle kits

Suspension Components:

  • Hangers, equalizers, beams & rubber seats

  • Bushings

  • Axle wedges

  • Torque rods (both rigid & adjustable)

  • Hendrickson Ultra rods

  • Fasteners, bushing pins and axle wrappers

  • U-Bolts and U-Bolt kits

  • Shock absorbers

  • Threaded rod

  • Trunnion stands

"The FLAGG fill rate is exceptional. Stock orders arrive timely & are professionally packaged. This makes unloading and racking easy and efficient."

John Sadler, Sadler Power Train

SPRINGS MANUFACTURED IN AMERICA FOR ALMOST 100 YEARS!
 

Behind every TRIANGLE spring you get nearly 100 years of experience in manufacturing and design. At TRIANGLE, all springs are manufactured to an OE or aftermarket specification. You can trust TRIANGLE to protect your investment and deliver consistent performance every time, all backed by our outstanding warranty policies.

 

In addition to Heavy, Medium & Light Duty applications, our Custom Engineered springs will fill any niche needs your customers may present you. They will be designed and manufactured to your specifications.

 

All products are manufactured to rigorous guidelines.  

Leaf Spring Assemblies:

  • Tractor, trailer & light duty truck applications

  • Multi-leaf Springs

  • Parabolic Springs

  • Air Beams

  • Helper Springs

  • HD spring options

  • Custom Engineered Springs

Spring Repair Material:

  • Repair Plates and Single Leaves

  • Clip Material

  • Spring Clips

"Buying American made, quality products is a big factor for us choosing to partner with Triangle. Triangle is a true business partner!"

John Sadler, Sadler Power Train

AIR SPRINGS DISTRIBUTED
BY TRIANGLE
 

Distributed by TRIANGLE, the Continental ContiTech product is one of the largest and most respected names in the air spring business worldwide.  As a supplier to major OEMs, ContiTech has the research and development expertise to engineer world-class products.  This gives you the assurance that the ContiTech air springs that TRIANGLE delivers will always achieve the maximum value mile after mile.

 

Complete replacement is always the best option when an air spring fails.  Specify a new ContiTech air spring from TRIANGLE and you will receive the maximum value for your maintenance dollar.  This quality air spring product is backed by an industry leading 3 year/300,000 mile warranty.

ALWAYS NEARBY, ALWAYS READY TO SERVE YOU

TRIANGLE will be able to serve you thru a nationwide network of over 1,400 Distributor locations.  Each distributor is factory trained and backed by TRIANGLE’s in-house technical staff.  We know air suspensions, top to bottom – test us!

ACCURATE REPLACEMENT PARTS THE FIRST TIME

Locating the right air spring using the patented software included in WebSST electronic catalog has never been easier.  Based on the rubber bellows number or visual selections and simple dimensions, you can find and order the right replacement ContiTech air spring to be delivered to you by TRIANGLE.

SUPPORT ON DEMAND - 24/7/365
 

Information is easily searched in this cloud based database. Images, schematic drawings and dimensional specifications on thousands of part numbers with easy look up product line guides provide TRIANGLE’s distributors the ability to quickly identify the right part for their customer’s application needs.

 

Cross references and part number interchanges are continually updated to be made available thru WebSST giving each of our Distributors the most current information for today’s repairs.  Keep a close eye on new products being introduced by TRIANGLE as well as Promotions and Tech Info to help make your counter staff more valuable.

"WebSST is very helpful to our counter guys. And your customer service group is the best!"

Mike Holdaway,

AAA Spring & Truck Parts

NEWS
 

"The Triangle team and level of experience fit perfectly with our manufacturing supply chain. No one does it better!"

Jeff Crosby, Deaver Spring

STATE SPRING & ALIGNMENT NAMED
"SERVICE CENTER OF THE YEAR"

As Triangle celebrates its 100th anniversary, State Spring & Alignment of Grand Rapids, Michigan isn’t far behind. The family owned and operated company that was founded 95 years ago is the recipient of Triangle’s “Service Center of the Year” award.

 

A dedicated team, led by Rick Sheehan, President, is defined by integrity and expertise. Their two locations, Grand Rapids and Lansing MI, are positioned to provide the West Michigan area the best source for replacement and aftermarket spring and suspension parts. Springs, brakes, alignments and D.O.T. inspections are on their full menu of services offered.
 

Triangle is proud to have been a part of State Spring’s success over the years by providing them quality spring and suspension product and technical support.

State Spring & Alignment.png

95 Year Old Company in Grand Rapids, Michigan Continues to Deliver Expertise.

INLAND TRUCK PARTS NAMED
"DISTRIBUTOR OF THE YEAR"

The recipient of Triangle’s “Distributor of the Year” award is Inland Truck Parts. Greg Mundy, Purchasing Manager, was presented this award to honor Inland’s exemplary truck service and repair offered by each of their locations spanning thru the Great Plains and Midwest.

Since 1944, this employee owned company has expanded and grown but never stopped looking forward as they provide unmatched customer service and craftsmanship. With a vast parts inventory covering everything from light-, medium- and heavy-duty trucks to SUVs and 4x4s, as well as in-house component shops and on-site remanufacturing capabilities, Inland Truck Parts has what it takes backed by over 70 years of service you can count on.

Year-over-year Inland Truck Parts has offered Triangle’s quality spring, suspension and air spring products providing fast turnaround, superior quality and exceptional truck component services. This award represents well-earned recognition of this valuable customer-supplier relationship. 

Inland Truck Parts.png

Since 1944 Employee-Owned Company Maintains Forward Momentum.

TRIANGLE SUSPENSION SYSTEMS SUBSTANTIALLY IMPROVES LEAF SPRING PRODUCT CORROSION PROTECTION

DuBois, PA (October 29, 2018) Triangle Suspension Systems has substantially improved the corrosion protection of their multi leaf and parabolic springs by adding a new high performance, corrosion resistant water-based coating.

FULL PRESS RELEASE HERE

Screen Shot 2019-01-13 at 10.06.25 AM.pn

Triangle Suspension Systems is the leader in undercarriage products for heavy, medium and light duty trucks and trailers.

 
CONTACT

"From TRIANGLE’S leadership to the outstanding sales staff and responsive service personnel, it's clear TRIANGLE cares about our success!"

John Sadler, Sadler Power Train

CUSTOMER SERVICE

8:00 AM to 7:00 PM EST

Sales Phone: (800) 458-6077

Sales Fax: (800) 237-2396

orders@triangleusa.com

CORPORATE OFFICE, MANUFACTURING FACILITY & DISTRIBUTION CENTER

200 East Maloney Road

DuBois, PA 15801 USA

TEXAS DISTRIBUTION CENTER

725 S. Jupiter Road

Garland, TX 75052 USA

WEST COAST DISTRIBUTION CENTER

8667 Hemlock Ave

Fontana, CA 92335 USA

SEND US A NOTE &
REQUEST WebSST LOGIN CREDENTIALS
REGIONAL MANAGERS & KEY CONTACTS

Vince Roth

Vice President of Sales & Marketing

(402) 334-9603

vroth@triangleusa.com

Dan Kiser

Product Manager & Technical Service

(814) 375-7217

dkiser@triangleusa.com

Brent Burich

Eastern Regional Manager

(412) 616-2546

bburich@triangleusa.com

Jim Barna

Central Regional Manager

(402) 881-5414

jbarna@triangleusa.com

Bob Reilly

Western Regional Manager

(760) 213-6909

breilly@triangleusa.com

DISTRIBUTION CENTERS