Sustain Handles

[ncbass]

Will the new handles fit on corresponding models of older Sustains ? Specifically the 4000 and 2500 FB ? Each a separate handle I assume ?

[Bantam1]

This is correct. The older Sustain FB models have a handle for each size. The lengths of the handle shafts are different and the thread sizing should be different between the 2500 and 4000 if memory serves correct.