Schwartz Performance IRS G-Machine

New IRS Schwartz Performance G-Machine Chassis

Schwartz Performance is excited to now offer an Independent Rear Suspension option for their entire line of G-Machine Chassis. The IRS, designed and tested by the Schwartz R&D team, is designed to provide an even higher level of performance and comfort to their iconic line of bolt-in G-Machine Chassis for muscle cars, trucks and classics.

Schwartz Performance IRS G-Machine
Schwartz Performance IRS G-Machine

The IRS is based around a Currie F9 rearend housing and 35-spline third member with beefy RCV axles rated to handle up to 1,200 horsepower. A combination of heavy-duty FK 5/8” Heim joints as well as RideTech’s R-Joint’s provide a secure and quieter assembly. The axles can be fitted with caliper brackets to secure Baer Pro-Plus or Extreme-Plus 6-piston calipers and available with RideTech single or triple adjustable coilovers.

The multi-link design of the Schwartz IRS allows for simple servicing due to its bolt-in packaging. Like all of their G-Machine Chassis and products, the IRS has been thoroughly developed and tested on tracks and the street including plenty of laps and miles in our SKART test vehicle (shown above).

The Nuts and Bolts

  • Multi-link design ensures bind-free movement for a smooth, quiet ride
  • New Currie F9 housing supplied with 35-spline third member and Truetrac posi unit
  • Stout RCV axles handle up to 1,200 horsepower
  • Capped with Baer 6-piston Pro-Plus or Extreme-Plus caliper mounts
  • Supplied with single or triple adjustable RideTech Coilovers

For more details and information on the new Schwartz IRS or their line of G-Machine Chassis, go to