For many singlespeeders, the option to add a multi-geared drivetrain is a nice option when you need it. But what happens when you want that multi-geared option to be a Pinion gearbox? Apparently, you just have to get Curtis Inglis to make you a wild trellis-like Pinion-to-SS adapter. Simple. OK, this adapter is anything but simple - but it's certainly a thing of beauty. Utilizing the mounting points of the Pinion gearbox, the adapter simply positions a bottom bracket shell where it would be if the frame wasn't built for a Pinion in the first place.