Differences Between Roush Performance Stages and Phases

One of the most frequently asked questions we receive here at Sherwood Ford regards the difference between Stages and Phases in Roush Performance.

There’s just something about getting behind the wheel of an RS3 Mustang with a Phase 2 supercharger kit pumping out 727 horsepower and an incredible 610 ft-lb of torque. If you’re a little confused after reading that last sentence, that’s okay. There are many people who love Roush Performance vehicles, but don’t quite understand the differences between stages and phases. That’s where we come in. Join us here at Sherwood Ford as we take a look at the differences between Roush Performance stages and phases.

Learn More About the Ford Mustang 

Roush Performance Stages

If you have a 2015-2017 Roush Mustang, then it was built in one of four stages: RS, RS1, RS2, and RS3. The biggest difference between these stages is that the RS is a V6, the RS1 is an I-4, the RS2 is a naturally-aspirated V8, and finally, the RS3 is the ROUSHcharged V8 engine. If you own a Roush Mustang made in 2014, the RS was a V6, while the rest all had a V6 engine in them. Basically, the stages of Roush Performance describe which type of engine lives underneath the hood of your vehicle. In addition to stages, Roush Performance vehicles also come in different phases.

Roush Performance Phases

If you were to order a Roush Stage 3 Mustang, it would automatically be equipped with a Phase 1 Roush Supercharger. With the Phase 1 supercharger, Mustangs made in 2015-2017 receive an immense horsepower and torque boost. Step on the accelerator and get ready to hold on as the 670-horsepower engine that cranks out 545 lb-ft of torque takes control. Like the Phase 1 supercharger, the Phase 2 supercharger boosts the horsepower and torque that the engine is capable of producing, with 727 horsepower and 610 ft-lb of torque. The Phase 3 supercharger is only available on Mustang models made before 2015, and greatly increases the horsepower and torque rating as well.

So there you have it, the different stages of your Roush Performance vehicle tell you what behemoth of an engine resides underneath your hood, while the different phases available for these engines give your performance vehicle more, well, performance! If you have any other questions about Roush Performance, please don’t hesitate to contact us here at Sherwood Ford. Our knowledgeable and friendly team members will always be more than happy to assist you.

Learn More About Roush Performance