800-841-8188

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INCLUDED IN BASE KIT
  • Top Crossmember
  • Upper & Lower Arms
  • Aluminum Uprights
  • CV Joint Halfshafts
  • 9" Aluminum Housing 
  • 3rd Member, Iron, Posi
  • 10.5" Wildwood Rotors with 4 Piston Polished Calipers
  • Billet Single Adjustable Coil-over Shocks with Chrome Springs

1955-1957 CHEVY BOLT-IN INDEPENDENT REAR SUSPENSION


COMPLETE BASE KIT STARTING AT $9,320

The Tri-Five HEIDTS Pro-G™ IRS is a true bolt-in, high horsepower Independent Rear Suspension System for 1955 through 1957 Chevy cars. This industry-leading design is based off the proven and award-winning HEIDTS Pro-G™
IRS geometry, while the bolt-in design means it can be installed on cars that are already complete or easily added to builds already underway. The Tri-Five 55-57 Chevy BOLT-IN INDEPENDENT REAR SUSPENSION also features several design enhancements to make exhaust routing easier.

Select your options and Add To Cart below.

   *Shown Painted -- This item is shipped unpainted.

COMPLETE BASE KIT(Select One)
Photo
Description & Part #
Base Price

TRI-5 IRS, PLAIN
Part# IRS-151
$9,320.00

TRI-5 IRS, POLISHED
Part# IRS-151-P
$15,325.00

TRI-5 IRS, DRILLED ROTORS
Part# IRS-151-S
$9,655.00

TRI-5 IRS, DRLLED ROTORS, POLISHED
Part# IRS-151-S-P
$15,660.00
SHOCK & SPRINGS OPTION(Select One)Reset Selection
Photo
Description & Part #
Base Price
BILLET COIL-OVER SHOCKS (CS-XXX-10 Included)
Part# CB-106-K-K
Included in base kit!
3RD MEMBER OPTIONS(Select One)Reset Selection
Photo
Description & Part #
Base Price
POSITRACTION 31 SPLINE 9″ GEAR
Part# BN-XXX-I-L
Included in base kit!
BRAKE OPTIONS
Photo
Description & Part #
Base Price

PRO-G IRS PARKING BRAKE KIT
Part# PB-101
Add for ea. $589.00
E-STOPP PUSH BUTTON ELECTRIC PARKING BRAKE
Part# BM-013
Add for ea. $699.00

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