The PHOBOS operator has been around for many years and BFT has changed it a lot over time. From the first operator with the telescopic stem to the last with a nut and new design. Some new models are also compatible with old ones, others are not. For this reason, in this category you can find in addition to all spare parts (even the oldest) also the new PHOBOS with a video that clarifies the various compatibilities.

Many of the PHOBOS replacements are also good for the PROTON.