Rieger Rear Diffuser / Valance / Bumper Insert for BMW 3 Series G20 G21 (2019+) - Gloss Black or Satin Black ABS Rear Skirt/Apron Trim - Fits Saloon & Touring - Performance OEM-Style Lower Bumper Splitter (00088306 / 00053504)

Upgrade your BMW G20 G21 rear end with a premium performance look

Give your 3 Series a sharper, more aggressive appearance with this Rieger rear bumper insert. Engineered from high quality ABS, this rear valance delivers an OEM-plus finish that elevates the aesthetics of your saloon or touring without compromising everyday usability. Perfect for drivers seeking a subtle yet purposeful exterior styling upgrade, this aerodynamic rear trim enhances road presence and complements factory lines.

Why enthusiasts choose this rear valance

• Premium ABS construction for durability and a factory-style fit
• High gloss or satin finish options to suit your build
• Vehicle-specific moulding for the BMW 3 Series G20 and G21 platforms
• Complete with mounting hardware and documentation
• Transforms the lower bumper with a clean, performance styling upgrade

Finish options and part numbers

• 00088306 - ABS gloss black
• 00053504 - ABS satin black - supplied paint-ready and requires finishing

What is included

• Rear bumper diffuser insert
• Full fitting kit
• General operating licence documentation

Compatibility

• BMW 3 Series G20 - saloon - 03.2019 onwards
• BMW 3 Series G21 - touring - 03.2019 onwards

Benefits at a glance

• OEM-look rear apron styling with enhanced aggression
• Resistant to weathering and everyday road use
• Designed to integrate with existing body lines for a seamless appearance
• Ideal for aero kit builds, performance-focused styling and show car projects

Real-world feedback

We have installed these in-house and our customers consistently praise the tight fit, quality surface finish and the instant visual impact. It is a straightforward way to achieve that performance rear skirt look without going over the top.

Professional fitting available

For a hassle-free install, book professional fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and scheduling.

Care and finishing tips

• For gloss: protect with a quality sealant and wash with pH-neutral shampoo
• For satin: if painting, test fit prior to paint and follow your body shop’s prep process

Search-friendly terms

BMW G20 rear valance, G21 back bumper diffuser, BMW 3 Series rear skirt, lower bumper insert, rear apron, rear splitter styling, gloss black rear trim, paintable diffuser, BMW body kit upgrade, exterior styling for 3 Series 2019-on.

Order now to add a premium, performance-inspired finish to the rear of your BMW.