GR-40/GR-350 Suspension Systems | Individual GR-40 Upgrades | Complete Parts List

The Griggs Racing GR-40 chassis components are simply the finest chassis components available for a Mustang. No competitor's products, regardless of price, offers the same level of performance. Skeptical potential customers and satisfied GR-40 drivers frequently ask "What makes the GR-40 components so superior? The simple answer is, "They are designed to be."

The GR-40 upgrades below are presented in a logical format that describes the best Step-By-Step process for upgrading your Mustang's suspension -- it intended to provide an alternative to purchasing a complete GR-40 system outright.



  • GR-40 Chassis
  • GR-40 Rear Suspension
  • GR-40 Shocks/Springs
  • GR-40 Front Suspension
  • GR-40 Brakes/Wheels/Tires
  • GR-40 Powertrain
  • GR-40 Engine
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