G30 Rear Diffuser for BMW 5 Series Performance Upgrade
Upgrade the rear aesthetics and aerodynamic performance of your BMW with our G30 Rear Diffuser, precision-engineered for the BMW 5 Series G30 and G38 (2018–2020). Manufactured from 100% dry carbon fiber using autoclave technology, this rear diffuser delivers motorsport-level quality, lightweight construction, and a flawless carbon weave finish.
Designed and produced in our own carbon fiber factory, this diffuser is available with customization options to meet individual styling or OEM+ requirements.
G30 Rear Diffuser Specification
- Item: WK-BMG30/G38-1820-HCBJ
- Product Type: Rear Diffuser + Spats
- Fitment: BMW 5 Series G30 Sedan (2018–2020) and BMW 5 Series G38 Long Wheelbase (2018–2020)
- Process: Autoclave Curing
- Material: Dry Carbon Fiber
- Material Specification: 3K, 12K, Forged carbon
- Surface Finish: Matte or Glossy
- Welcome to contact us to get the sample and price
Dry G30 Rear Diffuser Description
Features:
Premium Dry Carbon Fiber Construction: Unlike wet carbon or FRP alternatives, our G30 Rear Diffuser is made from dry carbon fiber, offering superior strength, reduced weight, and a more refined finish. Dry carbon fiber is widely used in supercars and motorsport applications, making it the preferred choice for customers who demand the highest level of quality and performance.
Autoclave Manufacturing Process for Motorsport-Level Quality: Each G30 Rear Diffuser is produced using a high-pressure autoclave process, ensuring consistent resin distribution and optimal fiber bonding. This advanced manufacturing technique ensures every diffuser meets strict quality standards before leaving our factory.
Aerodynamic Performance & Functional Design: Beyond visual enhancement, the diffuser plays a functional role in vehicle aerodynamics. The diffuser design helps manage airflow exiting from under the car, reducing turbulence and improving rear-end stability at higher speeds. While subtle enough for daily driving, the design reflects motorsport-inspired functionality.
Customization Options Available: We understand that every build is unique. As a direct manufacturer with our own carbon fiber factory, we offer customization services for the G30 Diffuser, including weave, coat finish, modified fin design or styling details, OEM+ or aggressive design variations, and private labeling or branding. Customization ensures the diffuser aligns perfectly with your brand identity or personal preferences.
Factory Direct Manufacturing: The car body kit parts are manufactured in-house, allowing full control over material sourcing, mold accuracy, production consistency, and quality inspection. This factory-direct model eliminates unnecessary middlemen, ensuring competitive pricing without compromising on quality. Every unit undergoes strict inspection for fitment, finish, and structural integrity before shipment.
Easy Installation & OEM-Level Fitment: The diffuser is engineered to match OEM specifications, offering precise mounting alignment, clean panel gaps, and secure attachment points. Professional installation is recommended, but no special fabrication or bodywork is required.
Why Choose Our G30 Rear Diffuser?
- Designed for BMW 5 Series G30 / G38 (2018–2020)
- Made from premium dry carbon fiber
- Autoclave manufactured for superior quality
- Aerodynamic and aesthetic enhancement
- Customization available
- Factory direct production
- Ideal for enthusiasts, tuners, and distributors
If you are looking for a high-quality G30 Rear Diffuser that combines performance, craftsmanship, and customization flexibility, this product is the perfect upgrade for your BMW 5 Series. Contact us today for custom carbon auto parts orders, bulk pricing, or OEM/ODM cooperation.



















