Rear Diffuser Lip in PU for BMW F30 F31 325i 320i 328i 335i M Sport (2012-2018)

It replaces the plain lower valance on the BMW F30 F31 325i 320i 328i 335i M Sport (2012-2018) 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 F30 F31 325i 320i 328i 335i M Sport (2012-2018)

Moulded from the BMW F30 F31 325i 320i 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

A ceramic or wax coat once a season is all this needs – the clear coat handles UV, but it is not a scratch-proof layer.

Because the tooling is in-house, changes that a trader would refuse – a different weave, a logo under the clear coat, a slight trim to clear a roll cage – are normal work for us.

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.