The MSC F5 came with a Fox Racing DHX 5.0 rear shock (9.5×3.0 eye-to-eye and stroke) which is pretty standard for a bike getting 8.5 inches of rear travel. I don’t recall bottoming the bike. Watching the suspension POV video, I know I did (or came close enough), so the ‘multi-progressive curve’ that the links create must do its thing.