Yeedercar Factory-Made Carbon Fiber Rear Diffuser Lip for BMW Back 3 Series E92 E93 M Sport Coupe Convertible

It replaces the plain lower valance on the BMW Back 3 Series E92 E93 M Sport Coupe Convertible with a finned diffuser that cleans up the airflow leaving the rear bumper.

Layered from 3K 2×2 twill and cured under vacuum in our own autoclave, so the resin-to-fiber ratio stays consistent from part to part.

Fits: BMW Back 3 Series E92 E93 M Sport Coupe Convertible

Moulded from the BMW Back 3 Series E92 rear bumper profile so the outer edges meet the bumper corners cleanly.

Undo the lower bumper fixings, offer the diffuser up, and re-use the original screws where the holes align – about an hour.

Quad-exit and single-exit cars use different cut-outs – confirm from the listing photos which bumper your car has.

Weave, finish and edge treatment are all chosen when you order: glossy 3K twill is the default, while matte, forged carbon, coloured clear coat and carbon-kevlar hybrids are produced on request.

• 3K twill, 6K twill, plain weave or carbon-kevlar hybrid
• Coloured tinted clear coat (red, blue, yellow)
• Logo application or badge cut-outs on request
• Gloss, matte, satin or forged carbon finish

Wash with a soft mitt and a pH-neutral shampoo, and avoid abrasive polishes or machine compounds that cut through the clear coat.

Our plant runs autoclave curing with logged temperature and pressure curves, so if a part ever fails we can trace the batch it came from.

Every unit is checked against a photo checklist – pinholes, weave alignment, mounting-hole position and clear-coat flow – before it is packed.

One piece is fine for a first sample – there is no minimum order. When you need volume, the same mould runs batches of 50, 200 or 1,000+ pieces.

Made to order in our workshop, typically 10-15 business days before it ships worldwide with tracking, backed by a 12-month warranty against manufacturing defects.

In the box: diffuser, screws, clips and a fitment card.