This part is listed by BMW as BMW part number 51245A5F548 (51-24-5-A5F-548) and is described as Genuine BMW Trunk Shock (Gas-Pressurized Spring) for F44 228i, M235i Gran Coupe (2021+).
This is a Genuine BMW trunk shock with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.
BMW Fitments:
2 Series
F44 Gran Coupe (2021+) > 228i xDrive GC
F44 Gran Coupe (2021+) > M235i xDrive GC
