Independent
Bike Fit Studio
Devon
Welcome, and thank you for visiting CORE Bike Fit. Here you'll find everything you need to know about my professional bike fitting services in Topsham, near Exeter in Devon.
I’m Jon Underhill, an independent bike fitter and founder of CORE Bike Fit. My mission is to help cyclists of all abilities discover their Optimal Rider Experience—an individually tailored fit that enhances comfort, performance, and enjoyment on the bike. That mission is what inspired the name CORE Bike Fit and remains at the centre of everything I do.
Whether you’re new to cycling and want to ride pain-free, coming back from injury, redefining your cycling goals, or chasing those extra watts as a seasoned rider, my role is to help you find your best position on the bike.
“I want to help as many people as I can enjoy riding their bicycles.”
" By learning from some of the industry's leading bike fitters and movement neurologists I have developed a skill set that enables me to provide cutting-edge, advanced bike fitting techniques personalised for you ”
JON UNDERHILL - CORE Bike Fit Owner
Create Optimal Rider Experience
CORE Bike Fit has three main options for independent bike fitting services in Exeter, Devon. , Ensuring every rider gets the most suitable solution for their journey.
Align Fit, Balance Fit, and Complete Fit.
The best option for you depends on your unique cycling needs and personal goals.
Bike Fitting Services
Align
If you're new to cycling or experience no significant pain or injuries, this fit is designed for you.
During this session, we will adjust:
Saddle height, fore-aft position, and tilt
Handlebar width, reach, and height
Cleat positioning
This ensures a comfortable, efficient riding position tailored to your needs.
Balance
Building on the Align Bike Fit, this session takes a deeper look at your feet, saddle choice, and crank length. It’s designed for riders with higher mileage or those experiencing injuries and discomfort.
In this session, we will cover:
The benefits of insoles and foot activation
Saddle pressure mapping and testing
Crank length optimization
This comprehensive approach aims to enhance comfort and performance on every ride.
Complete
This fit is designed for riders with serious, long-term cycling issues.
It’s a multi-visit package offering 12 months of support, including two follow-up visits beyond your initial fit. Our goal is to develop a deep understanding of your needs over time, helping you unlock your full potential.
In this session, you will receive:
Foot activation
One pair of custom footbeds
12 months of ongoing support
Two follow-up visits within the year
This comprehensive approach gives you expert care and continuous adjustments to ensure lasting comfort and performance.
Extra Services
-
Thinking about ordering a new bike then we can help you find the correct geometry to make your dream come true
-
Working with G8 and SIDAS we can craft a custom insole to get the best from your feet for your cycling
-
We work with LORE the worlds leading custom performance cycling shoe manufacturer
-
We can utilise a range of technology to ensure you are sitting comfortably in the right place and then use our saddle library to find the best solution for you
-
CORE Bike Fit offers a unique 30 minute free in person, virtual or phone call to understand your needs and help guide you through the process of finding the best solution for you whilst giving you the opportunity to ask all the questions you may have
-
Over time our bodies change through exercise and stress. If you have had a bike fit from us in the last 12 months and want to check everything is still ok then book our Annual MOT bike fit.
-
Have you had a bike fit somewhere else and still not satisfied or happy with your position. We offer a unique service to offer you a way forward without the cost of a complete fit. Please contact for more details
Why choose CORE Bike Fit?
1) I use state of the art equipment to help make informed decisions about your personal bike fit. Utilising video analysis, Purely Custom Fit Jig, pedal analysis & Velometrik saddle pressure mapping systems to fully understand your individual needs.
2) My family background is shoes and feet. I would have been the 5th generation of master Shoe Repairers if I hadn’t fallen in love with bikes. There is no coincidence I focus on the interaction between your feet, shoes, cleats and pedals. To me this is the single most overlooked and misunderstood interaction with any bicycle #focusonyourfeet
3) As an independent fitter I am not tied to using any product or to sell things as traditional bike shop might. I don’t suggest anything I personally would not use myself and everything has been chosen by me based on my research, experience using it and customer feedback.
4) My personal approach is to treat you the rider as the most important element of the Bike Fit. Working with you to understand your own goals and issues I tailor your bike to fit you, not you fitting the bike.
5) Having struggled for years with tight shoulders and neck pain when riding, I know how it feels to not be comfortable on the bike. I used to just grit my teeth and bare it thinking it had to be this way. Fortunately I now know what was causing it and more importantly how to solve it. CORE Bike Fit Devon can help you remove discomfort from your cycling position.
6) I have been trained by THE BEST trainer in the UK. My approach is different to bike shops as I use a range of technology along with my experience and more importantly your feedback to prove what we have done has made a positive impact on how you feel as an individual. There are no averages and rules of thumb used at CORE Bike Fit. The technology we employ is used to help me demonstrate what potential there is to unlock your cycling.
What our Customers Say
CORE Bike Fit Ltd
16A Fore St
Topsham
Exeter
Devon
EX3 0HF
Do you have any questions?
Contact us today