Alurack TopCase Carrier for Combination with Original Rear Rack for HONDA XL 750 Transalp (2023-) 350excf then you can use this

then you can use this 25mm to 3 prong adapter to connect to Ultimateaddons 3 prong cases and holders

are integrated into the design of the rack

USB/OTG  ✓ GPS ✓

HONDA Grom 125 (2014-2021)

Alurack TopCase Carrier for Combination with Original Rear Rack for HONDA XL 750 Transalp (2023-) 350excf then you can use thisThe Hepco&Becker Alurack is especially designed for our top cases. As the successor to the luggage rack made of round tubing, the Alurack continues the tradition and is offered for later generation motorcycles. This means you can attach nearly every Hepco&Becker top cases, wether aluminium or plastic and choose freely from the whole product line. Every Alurack is developed for the specific model and fits beautifully into the motorcycles overall look.