Roush Performance has announced a raft of upgrades for the 2015 Ford Mustang – all are mostly cosmetic.

HOT ON THE HEELS of Hennessey announcing its 717hp power hike for the 2015 Ford Mustang, noted Mustang tuner, Roush Performance, has announced three upgrade Stages.

“We have taken a different approach to our new Stage lineup.” states Jay Velthoven, Director of Marketing at Roush Performance.

“The 2015 RS will be built on the Mustang’s V6 platform, the Stage 1 will feature the new turbo-charged Ford 2.3L Eco-Boost motor, and the Stage 2 will showcase a naturally aspirated 5.0L V8.”

While the Roush Mustangs make do with stock power output, they all get major aerodynamic and cosmetic upgrades. All get Roush’s seventh generation aero package: “a fully remodeled Roush fascia with integrated aero-pockets, a five-blade upper grille, high-flow lower grille with driving lamps, and a front chin splitter,” a statement read. Additionally, the ROUSH Stage Mustangs have several exterior and interior cost-options available: side quarter window scoops, body side scoop, hood scoop and more.

“We worked closely with our race teams aero specialists as we modeled our new body components.” says Mark Trostle, Lead Designer at Roush Performance.

“It’s instantly noticed on the rear with the race-inspired lower aero-valance and a new one piece decklid spoiler. We also tied the whole aero package together with a set of side rocker canards.”

Along with the aggressive new look, the Stage 1 and Stage 2 get the new ROUSH quad-tip performance exhaust system. “The new quad-tip exhaust is a modular design that is set to accept future upgrades,” says Erin Dmytrow, Engineering Director at Roush Performance. “We are working on some exciting features that will be available later this year.”

The Roush Mustangs also get cost-optional suspension setups and new Quicksilver 20-inch Roush wheels – wrapped in the Roush/Cooper Tires (co-developed) RS3-S ultra high-performance tyre.

Inside, every Roush Mustangs will receive Roush embroidered floor mats and a serialized Roush dash badge. Cost-optional Roush gauge cluster and leather seating upgrades are available for both the standard seat and the upgraded RECARO seats.

Pricing starts from USD$4495 for the RS upgrade through to USD$8495 RS 2 upgrade.

Practical Motoring spoke with Ford Australia brand communications manager, Neil McDonald about whether, once the Mustang is launched in Australia, buying, for example, a Roush aero kit would void the vehicle’s warranty, and “It’s still a way to go to launch… but I’d think that like other performance add-ons, unless they are from the manufacturer and warranted under the company, then you’re at risk of voiding the warranty.

“If it’s just a body kit, I’d say the same applies – given things like corrosion resistance etc. They could be a situation that a non-approved body kit could cause corrosion for example (wear for example on metal) and then unless it’s a Ford approved kit, it would be non warranted,” he said.