BMW 3 Series F30 / F31 Carbon Fibre Rear Bumper Diffuser Quad Exhausts (2012-2019)

Enhance the rear-end presence of your BMW with the Carbon Fibre Rear Bumper Diffuser – Quad Exhausts, designed to give the F30 and F31 a more aggressive, performance-oriented appearance. This diffuser adds depth and definition to the rear bumper, creating a bold visual upgrade while maintaining a clean OEM+ look.

Crafted from high-quality carbon fibre, the diffuser features a precise carbon weave with a premium gloss finish, delivering durability and a refined motorsport aesthetic. The quad-exit design integrates seamlessly with four-exhaust setups, perfectly balancing the rear profile.

Precision-manufactured for OEM-style fitment, the diffuser installs cleanly in place of the original lower bumper section, providing a refined yet impactful exterior upgrade.

• Rear bumper diffuser for quad exhaust setups
• High-quality carbon fibre construction
• Premium gloss carbon weave finish
• Motorsport-inspired rear-end enhancement
• Enhances rear stance and visual depth
• OEM-style fit and seamless integration

Kavoni Design Quality
At Kavoni Design, we select exterior upgrades that meet strict standards for material quality, precision, and design harmony. This carbon fibre rear bumper diffuser delivers a refined performance-inspired upgrade with a factory-level finish, perfectly suited to the BMW 3 Series F30 and F31.

Each product is carefully prepared and test-fitted before dispatch to ensure the highest level of quality and fitment.

Orders are typically processed within 1–2 business days. Please note that this handling time is included in the total delivery timeframe.

15–21 business days shipping

Returns are accepted within 14 days of delivery for unused items in original condition. Return shipping costs are the responsibility of the customer.

Suitable for BMW 3 Series F30 / F31 (2012–2019) with quad exhaust configuration.

Not sure if this diffuser matches your exhaust or bumper setup? Contact our sales team and we’ll be happy to assist you.

Every carbon fibre product from Kavoni Design includes a 12-month warranty covering manufacturing defects such as clear coat yellowing, delamination, or structural failure under normal use. Damage caused by improper installation, road debris, or accidents is not covered.

This is an aftermarket product and not original manufacturer equipment. Professional installation is recommended. Kavoni Design is not responsible for damage caused during installation.