M-Sport Rear Bumper For BMW 4 Series F32/F36 (2014-2017)
Fitment & Compatibility
Designed specifically for 2014–2017 BMW 4 Series F32 Coupe and F36 Gran Coupe 428i models, this 2021 M4 Look rear bumper conversion kit delivers a modern performance-inspired upgrade while maintaining OEM-style mounting compatibility and rear-end alignment.
This kit is compatible with 2014 BMW 428i F32 and F36 models, 2015 BMW 428i F32 and F36 models, 2016 BMW 428i F32 and F36 models, and 2017 BMW 428i F32 and F36 models. It is engineered exclusively for Coupe and Gran Coupe body styles to ensure proper fitment with factory rear quarter panels and mounting structure.
The design includes provisions for PDC (Parking Distance Control) sensors and is built to align with OEM mounting points for a direct replacement-style installation. To ensure accurate compatibility, customers are strongly advised to provide their VIN number and vehicle photos before purchase. Free fitment verification is available to help prevent ordering mistakes. Professional installation is recommended for proper alignment, exhaust integration, and paint preparation.
Material & Finish
This rear bumper conversion kit is manufactured from high-quality automotive-grade polypropylene (PP), selected for its durability, flexibility, and OEM-style performance characteristics. The material is impact-resistant while maintaining enough flexibility to support daily driving conditions and long-term exterior use.
The bumper is supplied in an unpainted finish and requires professional sanding, priming, and painting to match the vehicle’s factory color. It is designed for body shop preparation and custom finishing. Minor surface marks from transportation may be present but are typically resolved during the paint preparation process.
Included Components
This listing includes a complete 2021 M4 Style rear bumper conversion kit as shown in the product images and parts diagram. The package includes the rear bumper cover, M4-style lower diffuser section, exhaust cutout trims, and PDC sensor mounting provisions where applicable. All components shown in the listing images are included.
Installation instructions are not included and professional installation is strongly recommended. Customers will receive the exact style and components displayed in the product photos. Please inspect all parts immediately upon delivery and report any shipping damage before installation.
Installation & Professional Requirements
We highly recommend professional installation for all body kit products.
Before painting or final installation, a full test fit is required to ensure proper alignment and fitment. This step is essential, as painted parts are considered modified and may not be eligible for return.
Important Notes:
Do not paint the item before test fitting
Minor adjustments, sanding, or trimming may be required for optimal fitment
Professional body shop installation is strongly recommended
Installation instructions are not included
If you are unsure about fitment, please contact us with your VIN before installation.
Design & Development Philosophy
This rear bumper kit is designed to transform the BMW F32 and F36 428i into a more aggressive and modern M4-inspired appearance while maintaining factory-style fitment and structural compatibility. Inspired by the 2021 M4 design language, the kit enhances the vehicle’s rear profile with sharper aerodynamic lines, a more defined diffuser structure, and a wider performance-oriented visual stance.
The design prioritizes OEM-style integration, ensuring clean alignment with factory body panels and mounting points. It also focuses on maintaining daily usability while delivering a significant visual upgrade. Durable polypropylene construction is used to ensure long-term strength, flexibility, and exterior reliability.
Every detail is engineered to provide a balance between aggressive styling and OEM-level installation compatibility, giving the vehicle a refreshed and high-performance rear-end appearance without compromising fitment quality.
Delivery & Packaging
Processing time: 1–3 business days.
Delivery time: 7–10 business days via LTL freight.
Liftgate or internal delivery services are not included(extra charge if needed).
Minor scratches during transport may occur; these can be resolved during the painting process.
Please inspect packages immediately upon arrival to report any damage promptly.
Return & Request
We offer a 30-day return policy for eligible items.
If you wish to request a return or exchange, please contact us and our team will assist you with the process.
Return Conditions:
Item must be unused, unpainted, and in original condition
Returns are not accepted for painted or modified items
Original packaging is required for all returns.