The Purely Custom Fitting Jig shown above is a state-of-the-art sizing bike that I use for custom frame designs, providing millimeter precision for clients before they purchase a made-to-measure bicycle. This ensures they can choose the right pedals, handlebars, ideal saddle, and optimal crank length without any guesswork. This Jig makes finding all these components easy.

But it doesn't stop there. I also use it for saddle fitting services, allowing saddle changes in seconds rather than minutes, as well as for triathlon bike fits, frame finder fits, time trial (TT) fittings, and determining the ideal crank length relative to the rider’s position and goals.

Changing cranks can be costly, but here it can be done in 2.5mm increments within seconds. Meanwhile, the Jig provides real-time torque analysis in response to the adjustments.