Heidts’ New Tri-Five Pro-G independent rear suspension for '55-'57 Chevys is a true bolt-in solution for those seeking better ride and handling without cutting up their car.
Heidts’ bolt-in, high horsepower Independent Rear Suspension System for tri-five Chevys is based off their Pro-G IRS design and adds yet another vehicle to their ever-growing lineup of front and rear suspension systems.
"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.”
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.
The Heidts Tri-Five Pro-G IRS package includes:
• 9-inch Aluminum Housing.
• 3rd Member, Iron, Posi-Traction
• HD CV Joint Half shafts
• Tubular Upper & Lower Arms
• Fully welded and boxed Top Cross Member
• Frame Mounting Brackets
• Forward Struts (Requires Sub-Frame Connectors)
• 10.5-inch Wilwood Rotors
• Billet Single Adjustable Coil-Over’s with Chrome Springs
• 56- or 58-inch Wheel Track Widths
• Choice of Rear Spring Rates
• Choice of component finish: raw or ‘Show Package’ of polished and chromed steel components & polished center section
• Parking Brake Kit and Cable Kit