Carbon Fiber Rear Diffuser for BMW G30 M Tech Tail Pipes G31 G38 520i 530i 540i M Sport (2017-2019)

Fitted to the BMW G30 M Tech Tail Pipes G31 G38 520i 530i 540i M Sport (2017-2019), it hides the underside of the rear bumper and adds the motorsport look the standard car lacks.

Fits: BMW G30 M Tech Tail Pipes G31 G38 520i 530i 540i M Sport (2017-2019)

The mounting points line up with the factory lower bumper fixings on the BMW G30 M Tech Tail.

Each part is laid up by hand, cured under pressure, then trimmed on a CNC so the mounting edges sit flush.

It fixes from underneath with the supplied screws and clips; removing the rear bumper is not necessary on the BMW G30 M Tech Tail.

If your car has a factory tow bar, the diffuser may need trimming around the mounting bracket.

Standard output is gloss clear coat over 3K twill, but matte, satin, forged carbon and tinted clear coats (including red and blue) are all available at order time.

• Gloss, matte, satin or forged carbon finish
• 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

The shop floor is in Shishan, Nanhai – the composite cluster west of Guangzhou – and the same bench that runs this part also runs our OEM work for tuners and distributors.

Each part is weighed and measured against the master sample, then wrapped in foam and boxed in a double-wall carton with the hardware bagged separately.

Small runs are quoted per piece; above roughly 50 pieces the tooling cost is absorbed and the unit price drops, so ask for a stepped quote.

Rinse road salt and brake dust off regularly and wipe with a pH-neutral cleaner; a light wax keeps the clear coat glossy and stops dust bonding to the weave.

Production is 10-15 business days because the part is made after you order it, not pulled off a shelf; after that it ships with tracking and a 12-month defect warranty.

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