Callaham Upgrade Kit, Bigsby String Shaft for B3, B5, B7

Unlike the more modern Gretsches, the historic come with the old style Bigsby with the pins. And let’s face it, they’re a pain in the butt to restring. This Callaham shaft solves all that. Easy to install also. I’m using this on my ‘53 Gretsch Duo-Jet. Also, added a roller bridge that’s adjustable. Would definitely buy again if needed.

Fits perfectly and IMHO it is the best setup for your Bigsby

Bought it for a Guild Bigsby.
The shaft is about .366, but opening about .39
Shaft too loose and wobbly.
Ill save it to use on a Gretsch.

This is something Bigsby’s should come with stock instead of the pins. Makes changing your strings an absolute breeze. I will never own another Bigsby without one.

First, this string-through roller doesn’t come with instructions, but there’s a video online that walks you through all three B5 and B7 upgrades. Watch the video before attempting the instal!
As long as you’ve done that small bit of homework, swapping out rollers is a quick ( 5 minutes, max ) and simple job with minimum tools required. You don’t even have to take the vibrato unit off the guitar, unless you’re swapping the front roller, too. Just remove the strings, remove the swing arm by loosening the set screw with a #3 Allen wrench ( tool #1 ), remove the pins from the old roller with wire nips ( Don’t cut! Watch video! ), swap the old roller for the Callaham and reattach the swingarm. Done.
Changing strings is a breeze, now. At $49, this upgrade is more elegant AND cheaper than a String Buddy and I don’t get cold sweats over the thought of breaking a string at a gig.
Get one!