Sequential/H Shifter Converter JJSH-01

When JohnJohn 3D started creating accessories for sim racing, we looked at many ways to offer a sequential shifter converter, something that would let you switch easily between H and sequential. Ideas came up, but none satisfied us, so the project went into the drawer to be revisited later.

And that moment came! In late 2025 we revisited the project (with more experience) and tested new approaches. The result is our JJSH-01, the JohnJohn 3D Sequential/H converter for Logitech G Series shifters!

With literally two screws and a 2.5 mm and a 1.5 mm Allen key, you can switch shifter modes on your Logitech easily and stress-free.

With two Allen keys you can switch modes: just loosen the knob screw, then the plate screw, and get the experience you want!

Because the parts are 3D printed, many people worry they will break easily. Here at JohnJohn 3D we tune our print settings so our products are as strong as possible!