Rieger Side Skirts / Sill Extensions Gloss Black for BMW 3 Series G20 G21 (2019+) M Sport – ABS Rocker Panel Extensions, Side Blades, Splitters | Saloon/Sedan & Touring/Estate OEM+ Direct Fit | Side Skirt Covers Body Kit Styling

BMW 3 Series G20 G21 Sill Extensions in High Gloss Black by Rieger

Transform the side profile of your 3 Series with precision-moulded rocker panel extensions engineered for cars with the factory M Sport package. Crafted from durable ABS for everyday road use, these aero side blades deliver an aggressive OEM+ look, sharper lines and a premium gloss black finish that ties in perfectly with other black styling accents.

We have fitted these in-house and the fit, finish and alignment are superb. Customers love the factory-style appearance and the way these sleek sill covers complete a performance body kit without looking overdone.

• Premium ABS construction for strength, impact resistance and long-term stability
• High gloss black surface for a deep, piano-black shine straight out of the box
• Designed specifically for M Sport cars for a clean, direct-fit upgrade
• Includes mounting hardware and approval paperwork for road use
• Enhances aero styling while keeping an OEM-level fit and feel

Vehicle Compatibility

• BMW 3 Series G20 saloon 03.19 onwards
• BMW 3 Series G21 touring 03.19 onwards
• For models with the factory M Sport package

Finish Options and Part Numbers

• Gloss Black - Part numbers: 00088304 and 00088303
• Satin Surface - Part numbers: 00053502 and 00053501 - requires painting and finishing

What’s in the Box

• Left and right side sill extensions
• Mounting hardware
• General operating licence documentation

Installation and Fitting

Designed for a straightforward fit with the supplied hardware. Want it installed professionally with perfect alignment and panel gaps

MJ Modifications, based in Warwickshire, can fit these for you. Request a quote: info@mjmodifications.co.uk

Why Choose This Upgrade

• Instant visual impact with a premium gloss black side profile
• OEM+ styling that complements M Sport bumpers and trims
• Durable ABS that stands up to daily driving

Popular search terms: BMW G20 side skirts, BMW G21 side skirts, 3 Series rocker panel extensions, sill extensions, gloss black side blades, side splitters, BMW 3 Series body kit upgrade, M Sport side skirt covers, G20 saloon aero skirts, G21 touring side skirts, BMW 3er G20 G21 styling, ABS gloss black skirts, OEM look side skirts, performance styling for BMW 3 Series.