We have heavy dumbbells and lots of them. We have all sorts of dumbbells. We have dozens of sets of the hex dumbbells up to 60 lbs. We have a hex dumbbell set up to 120 lbs. We have pro style dumbbells up to 150 lbs. We have customized dumbbells that we currently have up to 150 lbs and will be adding more up to 200 lbs.
We do have a few individual heavy dumbbells from 200 to 270 lbs. You can make these dumbbells even more difficult by adding a Fat Gripz to them or you can build your own using a rolling handle.