Sizing, Geometry & Fit

Each Bullfinch bike is lovingly hand built for the person that will ride it. This enables degrees of personalisation not possible with off-the-shelf bicycle frames. Our customisation process is built on a simple consultation with you soon after your order is placed. At that point you will also be choosing finishes and colours from our great range. At all points you will be dealing with professional staff who have many years experience in cycle fit and custom bike building.

How it works in practice

  • We hold master templates for each size and model which we then adapt for you in our CAD bike design system. In this personal design phase we will adjust head tube height according to your fit requirements and also factor in top tube length and angle.
  • We will supply a CAD drawing for information and sign off should you require it; we will be able to explain it in relation to other bikes that you might own. You can also visit Bullfinch’s first partner retail store (Red Kite Cycles, where you can see the range and meet experienced staff to talk you through the bike range and fit matters.
  • All bikes in the Bullfinch range are made in the following guide sizes:  50cm, 52cm, 54cm, 56cm, 58cm, 60cm. Further adaptation may be possible upon request.
  • You will be given a lead time when your order is placed – it may depend on project complexity (necessity of a custom tube for example). Current lead time is 8 weeks.

Email us through the contact page to ask for a call back if you want to understand more about the fit of these bikes. We are here to guide the uninitiated through the wonderful world of riding a bike made just for you.