MAZ Muscle Rear R1 Evo Widebody Kit - Fiberglass (MAZ-24-WB-REAR-FRP) - 2024-2026 Ford Mustang
Give your 2024-2026 Ford Mustang an aggressive race-inspired rear stance with the MAZ Muscle Rear R1 Evo Fiberglass Widebody Kit. Inspired by modern GT and Time-Attack race cars, the R1 Evo was developed with an emphasis on stance, airflow management, aerodynamic performance, and clean integration rather than exposed hardware or cosmetic-only width.
This rear-only configuration retains the Mustang's OEM front appearance while dramatically widening the rear of the S650. MAZ Muscle specifies an additional 2.5 inches of width per side at the rear, creating room for a substantially wider stance while using carefully designed transitions to connect the factory-width front bodywork to the widened rear quarters.
Rear-Only Widebody Configuration
The Rear R1 Evo Widebody Kit is designed for Mustang owners who want to retain the factory-style front profile while creating a dramatically wider rear track and body appearance. The system transitions from the OEM-width front of the vehicle into the widened rear through dedicated rocker panel and side skirt components.
MAZ Muscle specifies that the rear-only system adds approximately 2.5 inches of width per side at the rear. Separate manufacturer information also describes the rear width increase as 5.5 inches total, so those supplied measurements should be verified if an exact overall-width specification is required.
Race-Inspired R1 Evo Design
Inspired by modern GT and Time-Attack race cars, the R1 Evo uses performance-focused surfacing and aerodynamic geometry rather than relying solely on added body width for visual impact. The result is a widebody package designed to give the S650 Mustang a significantly more aggressive stance while maintaining clean transitions and cohesive body lines.
CFD-Developed Aerodynamics
MAZ Muscle states that the major aerodynamic surfaces of the R1 Evo Widebody Kit were refined using CFD analysis. The design process focused on improving cooling efficiency, airflow management, and aerodynamic balance at speed, giving the widebody system functional performance objectives in addition to its aggressive appearance.
Flush-Mounted, Rivet-Free Installation
Rather than using exposed rivets or visible mounting hardware as part of the styling, the R1 Evo is designed around a flush-mounted installation. This creates cleaner transitions between the factory body and widened components while maintaining an OEM-inspired finished appearance.
Fiberglass Construction
This version of the Rear R1 Evo Widebody Kit features fiberglass construction. The fiberglass configuration provides a versatile foundation for professional body preparation, paint, and finishing while retaining the complete R1 Evo rear-widebody design.
Because this is a multi-piece aftermarket widebody system requiring integration with the vehicle's existing bodywork, professional installation, complete test fitting, and body preparation before final paint are recommended.
Included Components
- Rocker panel and side skirt components for the OEM-front-to-wide-rear transition
- Add-on wide rear quarter panel - left side
- Add-on wide rear quarter panel - right side
- Rear bumper widebody attachment
Features
- Rear-only R1 Evo Widebody Kit for the 2024-2026 Ford Mustang S650
- Fiberglass construction
- Retains the OEM front body appearance
- Creates a dramatically widened rear stance
- MAZ Muscle specifies approximately 2.5 inches of additional rear width per side
- Separate manufacturer information lists a 5.5-inch total rear-width increase
- Inspired by modern GT and Time-Attack race cars
- Race-inspired surfacing and aerodynamic geometry
- Developed with an emphasis on stance, airflow, and functional performance
- Major aerodynamic surfaces refined using CFD analysis
- Designed to enhance cooling efficiency and airflow management
- Designed with aerodynamic balance at speed in mind
- Flush-mounted installation
- No exposed rivets or mounting hardware as part of the finished design
- Designed for clean transitions between factory and widened bodywork
- OEM-inspired body lines
- Includes rocker panel and side skirt transition components
- Includes left and right add-on wide rear quarter panels
- Includes rear bumper widebody attachment
- Multi-piece widebody system requires substantial production and preparation
- Professional installation and bodywork are recommended
- Complete test fitting before final paint and finishing is recommended
Production Note
Each MAZ Muscle R1 Evo Widebody Kit consists of numerous individual components and requires substantial production time. Because of the number of parts and the manufacturing involved, production time can vary from kit to kit.
Fitment
- 2024 Ford Mustang
- 2025 Ford Mustang
- 2026 Ford Mustang
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