RTR has introduced the new Mustang Spec 5, a model that builds on the brand’s history of performance-focused design. Known for creating vehicles that combine style with engineering, RTR has taken the foundation of the Mustang GT and elevated it with significant upgrades in power, handling, and appearance. This version pushes beyond previous models by offering a widebody system, custom components, and a high-output engine package.
The Spec 5 comes with unique exterior details, carbon fiber elements, and a full-body paint process to ensure a seamless finish. Limited production numbers also make it a rare offering, adding to its appeal. With both manual and automatic transmission options, the car is designed to fit different driving preferences while maintaining its focus on performance and exclusivity.
Key Takeaways
- The car combines upgraded performance with custom design features
- Limited production increases its exclusivity
- Buyers can choose from different configurations and finishes
What Is RTR Vehicles?
Brand Background
RTR stands for Ready to Rock, a performance brand that has been shaping custom Mustangs for more than 15 years. The company focuses on blending style, engineering, and driving enjoyment into each build.
RTR offers different performance levels, known as Spec models. These include Spec 1, Spec 2, Spec 3, and now the Spec 5. Each step adds more upgrades, with Spec 2 and Spec 3 being the most popular so far. The Spec 5 pushes things further with a widebody design, advanced suspension, and a supercharged 5.0L V8 producing over 870 horsepower.
Key RTR Features:
- Full body kits with aerodynamic upgrades
- Suspension and wheel enhancements
- Supercharger and cooling systems on higher trims
- Limited yearly production (about 50 units)
| Spec Model | Key Traits |
|---|---|
| Spec 1 | Entry-level styling upgrades |
| Spec 2 | Mustang GT base with RTR kit and suspension |
| Spec 3 | More aggressive performance and styling |
| Spec 5 | Widebody, 870+ hp, carbon fiber parts |
Vaughn Gittin Jr.’s Approach
RTR was founded by professional driver Vaughn Gittin Jr., who wanted to create cars that deliver both performance and personality. His goal was to make vehicles that feel exciting to drive while still being practical for everyday use.
People who have met him describe him as genuine and consistent, both on and off camera. His vision for RTR reflects that same authenticity—cars built not just for show, but for real driving enjoyment.
RTR Mustang Spec 5 Overview
How RTR Mustang Models Have Progressed
RTR has built a lineup of Mustangs over the years that includes Spec 1, Spec 2, and Spec 3. The Spec 2 and Spec 3 have been the most popular, with Spec 2 often starting as a Mustang GT equipped with the GT Performance Package. These earlier versions featured full RTR styling, suspension upgrades, wheels, tires, and aerodynamic parts.
The Spec 5 takes things further. Instead of small changes, it introduces a widebody system, major engine upgrades, and a higher level of engineering detail. RTR skipped the “Spec 4” name and went directly to Spec 5 to mark this jump in performance and design.
Key differences compared to earlier models:
- Spec 2/3: Visual upgrades, suspension tuning, and performance add-ons.
- Spec 5: Widebody design, supercharged 5.0L V8, over 870 horsepower, and exclusive production.
Where the Spec 5 Fits In
The Spec 5 is positioned as the top level in the RTR Mustang range. It starts with a Mustang GT 401A package and adds a 3.0L supercharger, heavy-duty race intercooler, and an RTR by Borla exhaust system. Buyers can choose between a 6-speed manual or a 10-speed automatic transmission.
The widebody kit is fully integrated, with hidden mounting points and composite panels for the fenders, bumpers, rocker panels, and rear quarters. Details include:
- Carbon fiber parts such as splitters, rocker extensions, and rear quarter splitters.
- Custom fuel door system with billet arms and a laser-printed bucket for an OEM look.
- Cooling ducts built into the rear quarters for both function and style.
Each Spec 5 is repainted after assembly to ensure the widebody panels match perfectly. Standard paint colors are included, with upgrades available for custom finishes.
Production details:
| Feature | Information |
|---|---|
| Annual Build | About 50 units |
| Starting Price | $159,999 (includes base car) |
| Transmission Options | 6-speed manual or 10-speed automatic |
This model sits at the top of RTR’s lineup, blending high horsepower, unique design, and limited availability.
Performance and Powertrain
5.0L V8 with Supercharger
The Spec 5 starts with a 5.0-liter V8 from the Mustang GT, paired with a 3.0-liter supercharger. This setup also uses a high-capacity race intercooler to keep temperatures stable during heavy use. An RTR by Borla cat-back exhaust completes the system, giving the car a distinct sound and improved airflow.
Output and Engine Strength
With the supercharged V8, the car produces over 870 horsepower. The torque figures are equally strong, making the vehicle capable of both high-speed performance and controlled power delivery.
| Component | Detail |
|---|---|
| Engine | 5.0L V8 |
| Supercharger | 3.0L unit |
| Cooling | HD race intercooler |
| Exhaust | RTR by Borla cat-back system |
| Horsepower | 870+ hp |
Gearbox Choices
Buyers can choose between a 6-speed manual or a 10-speed automatic. The manual offers a more engaging driving experience, while the automatic provides quicker shifts and faster acceleration. The automatic option comes at a higher cost from the factory.
Widebody Kit and Exterior Enhancements
Seamless Widebody Design
The Spec 5 features a fully blended widebody setup rather than simple bolt-on flares. All mounting points sit beneath the surface, leaving no exposed hardware along the body lines. This approach creates a clean look, especially across the rear quarter panels where hiding the hardware is most challenging.
Lightweight Composite Panels
The widebody package uses a composite material for strength and reduced weight. It includes new front fenders, bumper extensions for proper alignment, extended rocker panels, and reshaped rear quarters. Felt wheel well liners are also added so the car looks complete even when the wheels are removed.
Functional Aero Elements
Several parts of the exterior use exposed carbon fiber for both style and performance. Key components include:
- Front chin splitter
- Front and rear wake tower assemblies
- Rocker splitters
- Rear quarter splitters
- Custom fuel door with billet arms and nylon bucket
These pieces not only enhance airflow but also maintain an OEM-level finish.
Rear Quarter Cooling Channels
The rear quarters integrate ducts that direct air toward the tires. This design improves cooling while adding a unique visual element. Combined with the widened arches, the system balances function and appearance, ensuring the car’s broader stance works with its performance needs.
Carbon Fiber and Custom Components
Front Aero Splitter
The front splitter is built from exposed carbon fiber, giving the car both a sharp look and added function. It helps manage airflow at the nose of the vehicle while keeping weight down. The carbon finish makes it stand out against the widebody design.
Tower Supports
Both the front and rear tower assemblies feature carbon fiber construction. These pieces provide strength while also reducing unnecessary weight. Their exposed finish highlights the engineering detail without needing extra trim or covers.
Side and Rear Splitters
Carbon fiber panels extend along the rocker areas and rear quarter sections. These parts not only match the widebody flow but also include ducts that help cool the tires. The use of lightweight material ensures durability without adding bulk.
| Component | Material | Function |
|---|---|---|
| Rocker Splitters | Carbon Fiber | Side aero and styling |
| Rear Quarter Splitters | Carbon Fiber | Added stability and cooling ducts |
Custom Fuel Door
The fuel door is a one-off design made specifically for the widebody setup. It uses billet arms and a laser-printed nylon bucket to keep the fit and finish close to factory standards. The exposed carbon fiber outer piece ties it in with the rest of the custom components.
Paint and Customization Options
Standard Color Package
Each Spec 5 begins as a black Mustang on its factory window sticker. From there, RTR’s build partners repaint the entire car to ensure the widebody kit matches seamlessly. Owners can choose from a set of included colors that are applied across the full body, giving a uniform finish without mismatch between panels.
Premium Color Upgrades
Beyond the included palette, buyers can select from additional paint finishes at extra cost. These upgraded choices expand the range of personalization, allowing the car to stand out with more distinctive shades. The upgrade ensures both the widebody components and the rest of the body receive the same high-quality finish.
Assembly and Paint Process
The repainting process covers the entire vehicle, not just the added body panels. This method ensures consistent color depth and eliminates visible differences between factory paint and custom components. By handling the paint after the widebody installation, the build partners deliver a factory-quality appearance with a tailored finish.
Production and Availability
Yearly Output Cap
RTR plans to keep the Spec 5 Mustang extremely exclusive. Production is set at about 50 cars each year, making it one of the rarest builds in their lineup. Each unit begins as a Mustang GT with the 401A package and then receives the full Spec 5 treatment, including the widebody system, supercharger, and custom paint process.
Distribution Information
Allocations are tightly controlled. Dealers may only receive one or two cars at most, depending on availability. Buyers can expect direct handling of orders, with communication often managed personally to ensure accuracy. Pricing starts at $159,999, which already includes the base Mustang GT and the full RTR conversion.
Key Points:
- ~50 units produced annually
- Limited dealer allocations (1–2 cars)
- Inclusive starting price: $159,999
- Manual or automatic transmission available
- Custom paint required due to widebody integration
Pricing and Ordering Information
Inclusive Cost Breakdown
The Spec 5 Mustang starts at $159,999, which already covers both the vehicle and the full RTR package. This includes the Mustang GT with the 401A equipment group and performance package.
Additional costs may apply for:
- Transmission choice: The 10-speed automatic is priced higher than the 6-speed manual.
- Paint upgrades: Every car begins as black from the factory, then receives a complete repaint with RTR’s extended color options. Premium colors are available at extra cost.
How to Place an Order
Production is limited to about 50 units per year, making availability very restricted. Allocations are handled directly, and buyers can secure a build spot through direct communication with the seller.
Steps to order:
- Confirm interest and allocation availability.
- Select transmission and paint preferences.
- Finalize invoice pricing agreement.
How to Reach Out
Interested buyers can connect directly through:
- Phone: Call the number provided during the ordering process.
- Email: Sending an email is the most reliable option, as it goes straight to the seller for personal handling of the order.
