There are three main mounting types: Front-mounted, Rear-frame mounted, and Rear-rack mounted. You must confirm the clamping diameter (usually 28-40mm) and ensure the bracket does not interfere with brake cables or derailleur wires. For rear-rack versions, the rack must have a load capacity of at least 25kg-27kg (ISO 11243). Ask the supplier for a compatibility list covering MTB, Road, and E-bikes, as E-bikes often have thicker frames or integrated batteries that require specialized long-arm brackets.