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For the ’55-57 Chevy owner looking for a stronger rear axle assembly with increased handling capabilities, comes the Heidts Pro-G Independent Rear Suspension upgrade package. Assembled with the best hardware available, the Pro-G package provides the customer with several options to suit their needs.

Official Release:

Heidts Independent Rear Suspension for 1955 to 1957 Chevy’s

Wauconda, IL, August 15, 2012 – Heidts Automotive Group used the 43^rd Annual NSRA Street Rod Nationals Plus at Louisville, KY to introduced a bolt-in high horsepower Independent Rear Suspension System for 1955 through 1957 Chevy cars. This bolt-in rear suspension system is based off the proven and award-winning Pro-G IRS design and adds yet another popular vehicle to their ever-growing lineup of fully-engineered front and rear suspension systems and components.

“The Tri-Five Chevy owners have been asking us to develop a true, bolt-in IRS solution for them to put under their cars,” says Mike Hawley, Heidts Sales Manager. “These cars are hugely popular with both customers and our dealers and are built from mild to wild. This new bolt-in high horsepower Pro-G IRS will allow them to take the ride and handling of these classic builds to a whole new level of performance.”

“When we set out to develop this product, our engineering team had one goal: make this the BEST bolt-in IRS solution on the market – period,” says Jim Shaw, one of the Engineering Team members at Heidts that developed the Tri-Five Pro-G IRS. “The bolt-in feature means this Pro-G IRS can be installed on cars that are already complete or easily added to builds already underway. The ’55 to ’57 Chevy chassis provided some unique challenges, but we addressed them all and even made a few design enhancements to make exhaust routing easier.”

“We know that this application is going to be a big hit with our dealers and will allow them to introduced Heidts award-winning design and engineering, along with our best-in-the-industry customer service to a whole new segment of hot rod and street rod customers,” adds Hawley.

Responding to the requests of our dealers and customers, the Heidts Engineering Team has developed a high-horsepower, ’55-’57 Chevy application of the award-winning Pro-G IRS design and geometry.

The Tri-Five Pro-G IRS features a fully-welded and boxed, upper cross member, heavy-duty upper and lower control arms, fully welded uprights, heavy duty constant-velocity joints and axle shafts as well as Heidts’ own cast center section that can be loaded with a wide range of grear ratios and posi-traction differentials. The Tri-Five Pro-G IRS also makes use of standard 10.5-inch inboard mounted disc brakes with four-piston Wilwood calipers. Based upon the intended vehicle application, the Heidts Sales Team will help the customer select the proper spring rates for the coil-over shock assemblies. The Tri-Five Pro-G IRS is available in both 56- and 58-inch wheel track width versions.

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