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BMW M135i F20 Rear Diffusers
Upgrading or refreshing the rear of your BMW M135i F20? This Rear Diffusers range covers everything from clean OE-style replacements to aggressive performance diffusers that sharpen aero and styling. Whether you are repairing damage or chasing a more motorsport-inspired look, we have quality rear diffuser options to suit road and track builds.
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Price range: £149.00 through £189.00
This product has multiple variants. The options may be chosen on the product page
Rear diffusers sit at the back of the car and help manage the airflow leaving the underside of your BMW M135i F20. In simple terms, a good diffuser can tidy up turbulence, add a bit of high speed stability, and give the rear end a much more aggressive, motorsport inspired look. Whether you are building a track toy or just want sharper road presence, a quality rear diffuser is one of the most effective exterior styling upgrades you can bolt on.
Most of the diffusers in this Rear Diffusers range are designed specifically for your chassis, so you get a cleaner fit than universal body kit parts. You will see options in ABS plastic, GRP and carbon fibre, each with their own balance of weight, strength and finish. Some work neatly with factory bumpers, others complement splitters, side skirts and full aero kits to complete the look.
Paired with the right exhaust system and rear valance trims, a rear diffuser can really transform how your BMW M135i F20 sits on the road. Expect crisper lines, a more performance focused stance and, with the better designed aero parts, a subtle but noticeable improvement in stability at speed without ruining day to day drivability.