Magnum

The BumpStop Suspension Seat Post is a popular choice. It features 50mm of active suspension and an adjustable preload to customize your comfort level.

If you were searching for heavy-duty hardware with the "Magnum" name: magnum

Make sure you order the correct diameter for your specific model (e.g., 27.2mm or 31.6mm). The BumpStop Suspension Seat Post is a popular choice

Could you clarify if you're looking for a for a specific brand or a physical part for a machine? My Magnum Summit - Electric Bike Forums magnum