BMW G82 M4 with Acexxon horizontal slat rear reflector inserts installed on rear bumper

Acexxon G8X M3 / M4 Rear Reflector Inserts for a Clean OEM+ Rear-End Upgrade

Ryan Morgan

The rear styling of the BMW G8X platform has become one of the defining design elements of the modern M3 and M4 lineup. From the aggressive rear diffuser to the wide fender arches and sharp body lines, the G80 M3 and G82/G83 M4 carry an unmistakable motorsport-inspired presence. One detail many enthusiasts choose to refine, however, is the factory rear reflector design.

The Acexxon G8X M3 / M4 Rear Reflector Insert Set offers a clean, factory-inspired solution for owners looking to modernize the rear bumper appearance while maintaining a true OEM+ aesthetic. Available in both horizontal slat and honeycomb configurations, these inserts replace the factory rear reflectors with a gloss black finish that integrates seamlessly with BMW’s factory Shadowline trim and rear diffuser styling.

Acexxon G8X M3 M4 rear reflector insert set installed on BMW G8X rear bumper

BMW G8X M3 M4 rear bumper with Acexxon gloss black rear reflector inserts installed

Unlike overly aggressive aftermarket trim pieces, the Acexxon rear reflector inserts were designed to complement the original rear bumper architecture without disrupting the proportions of the vehicle. The horizontal slat version draws inspiration from BMW motorsport styling cues, offering a subtle and refined appearance that feels factory-correct while adding a more cohesive blacked-out rear-end design.

For owners seeking a slightly more aggressive appearance, the honeycomb version mirrors the factory mesh-inspired design language already found throughout the G8X platform, pairing especially well with carbon fiber diffusers and aerodynamic upgrades.

Acexxon G8X M3 M4 horizontal slat rear reflector insert close-up

Acexxon G8X M3 M4 honeycomb rear reflector insert close-up

Gloss black Acexxon rear reflector insert detail for BMW G8X M3 M4

Acexxon rear reflector insert showing gloss black finish and OEM style design

Each Acexxon reflector insert set is finished in high-gloss black and engineered specifically for the BMW G8X chassis using in-house 3D scanning technology and repeated test fitting. This development process ensures precise integration with the factory rear bumper so the inserts align properly with the surrounding body lines and mounting points.

Rather than relying on universal adhesive solutions, the Acexxon inserts utilize factory-style clips and tabs for installation. This allows the inserts to install as direct replacements for the factory rear reflectors with no cutting, drilling, or permanent modification required.

Acexxon G8X rear reflector insert with factory style clips and tabs

Acexxon gloss black rear reflector insert installation detail for BMW G8X M3 M4

The gloss black finish also pairs naturally with BMW factory Shadowline trim packages, making these inserts an ideal addition for enthusiasts building a cleaner OEM+ exterior theme. Whether paired with carbon fiber aero components, aftermarket wheels, or factory styling upgrades, the inserts help simplify the rear bumper design while preserving the original character of the vehicle.

The Acexxon rear reflector inserts fit a wide range of G8X applications, including the BMW M3 (G80) and BMW M4 (G82 / G83). Compatibility also extends to the G81 M3 Touring, G80 M3 CS, G82 M4 CS, and G82 M4 CSL models.

BMW G8X M3 with Acexxon rear reflector inserts installed

BMW G82 M4 rear bumper with Acexxon gloss black rear reflector inserts installed

Horizontal Slat or Honeycomb: Choosing the Right Look

The horizontal slat version delivers the most understated appearance of the two options, offering a subtle motorsport-inspired finish that blends naturally into the rear bumper design. This version works especially well on OEM+ builds focused on factory styling refinement.

The honeycomb version introduces a more aggressive texture that visually ties into the factory mesh patterns used throughout the G8X platform. Enthusiasts running carbon fiber rear diffusers or track-inspired aero components may prefer the honeycomb design for a more performance-oriented appearance.

Acexxon horizontal slat rear reflector insert installed on BMW G8X M3 M4

Acexxon honeycomb rear reflector insert installed on BMW G8X M3 M4

BMW G8X rear bumper detail with gloss black Acexxon rear reflector inserts

Acexxon rear reflector insert rear-end styling detail on BMW M3 M4

Product Details

  • Fits BMW G80 M3, G82 M4, and G83 M4 Convertible
  • Compatible with G81 M3 Touring, G80 M3 CS, G82 M4 CS, and G82 M4 CSL
  • Available in horizontal slat or honeycomb design
  • Sold as a left and right pair
  • Gloss black finish
  • OEM+ fitment with integrated factory-style clips and tabs
  • Developed using in-house 3D scanning and repeated test fitting
  • Direct replacement for factory rear reflectors
  • No cutting, drilling, or adhesive required for installation
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