• Discussion on your choice of builder; what you’d like to achieve with the purchase

  • Assessment of either existing bike, bike fit data, or frame draft from manufacturer

  • CAD drawings based on supplied data (includes prelim, adjusted and final versions)

  • 1.5 hours

  • £130



  • Discussion on your choice of builder; what you’d like to achieve with the purchase

  • Contact point fit on sizing jig to establish best frame dimension requirements

  • CAD drawings based on jig fit data (includes prelim, adjusted and final versions)

  • 2 hours

  • £180



Custom frame design comprises three main geometric elements. These are handling, rider position, and aesthetic. How these elements combine gives you your finished product.

Who decides on how they combine? Well, it depends on who you’re having your bike built with.

  • Handling: In the majority of cases this would be dealt with by the builder. The element of handling is often related to a specific model – a builder will design a frame to “behave” in a certain way - which characterises that model. In other cases the builder will be open to adjusting the handling to suit their client’s preference. And in yet other cases – such as with direct purchases from the far east – the builder will take the client’s lead on everything. Understanding how to apply specific handling characteristics is key.

  • Rider position: Ideally, this should be a joint decision between a bikefitter and the client. Some frame builders might have sufficient knowledge to position riders correctly, but never assume that they do. A rudimentary knowledge of fitting could lead to a frame being built around an imperfect position. In most cases, being armed with the knowledge of what you want from the position is extremely beneficial. And in all cases it dramatically reduces the possibility of things going wrong.

  • Aesthetic: Some models will have their own inherent aesthetic whilst others will be an “open” platform requiring aesthetic decisions from the client. Each case is different though, and in order to make those decisions the client has to know what specifics to look and ask for, and how these affect the overall design. The question here is, how does one make aesthetic decisions within the constraints of handling and positional needs?


The key to combining your elements is balance. Consideration has to be made of all three aspects, as well as include component choice and the ethos/mindset of the builder or brand. Getting a custom frame is about establishing where the best place is to make compromises and where not to; how to navigate restrictions whether these be physiological, component choice, or a challenging aesthetic.

The FORM custom frame design service takes you through the process of understanding what elements need deciding on, how those decisions should be made, and how to adjust everything into a pleasing aesthetic. It informs you of choices and details a builder might not consider, and teaches you to understand your own riding position in relation to the whole design.

In effect it puts you in the driving seat of the ordering process, with boundaries and parameters from which you can make the all-important decisions – important when walking mostly blind in a custom frame purchase. The kind of investment involved in purchasing a bespoke frame requires an equal measure in knowledge of what to ask for.