Cyclist being assessed at the CORE Bike Fit studio in Topsham, Exeter
Independent bike fit studio · Exeter, Devon

Create your optimal
rider experience.

Personal bike fitting shaped around your body, your goals and the way you ride.

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Jon Underhill, founder of CORE Bike FitIBFI Level 2 · Certified bike fitter
Meet Jon Underhill

Creating the optimal rider experience

Your bike should be adjusted to you. At CORE Bike Fit in Topsham, Exeter, Jon works with your body, riding goals and feedback to create an individual position.

From finding comfort on your first bike to refining a high-mileage set-up, every decision is personal.

“I want to help as many people as I can enjoy riding their bicycles.”
About CORE Bike Fit →
Bike fitting in Devon

Choose your level
of support

Three fitting experiences, each grounded in careful observation, precise adjustment and your feedback. Road and TT/Tri options are available.

Prices are total appointment prices. A £50 booking deposit forms part of the total for these fits.

Not sure which fit is right?

Find your starting point with our guided form, or talk it through with Jon.

Find your fit
Measurement-led expertise

Precision you can feel

Purely Custom adjustable bike fitting jig

Purely Custom fit jig

Explore geometry, saddle, cockpit and crank length with precise live adjustment.

Velometrik pressure mapping

Dynamic saddle-pressure information helps guide comfort and position decisions.

Motion & pedal analysis

Video and pedal analysis add evidence to Jon’s experience and your feedback.

Foot-focused fitting

Careful attention to the foot, shoe, cleat and pedal connection.

Explore the fitting process →
LORE foot scanning technology at CORE Bike Fit
#FocusOnYourFeet

The most overlooked connection on your bike.

Jon’s family background is in shoes and feet. That heritage informs specialist attention to your foot, cycling shoe, cleat and pedal—where every pedal stroke begins.

Why CORE

Independent. Personal. Precise.

01

Independent advice

Recommendations based on your needs and riding goals.

02

Advanced technology

Precise measurement, informed by experience and your feedback.

03

Focus on your feet

Specialist attention to the foot, shoe, cleat and pedal connection.

04

Personal fitting

Your body, experience and ambitions at the centre of every session.

05

Comfort & performance

A sustainable position for the way you want to ride.

06

Professional development

IBFI Level 2 qualified, with Applied Movement Neurology training.

Fit before you buy

A better starting point
for your next bike.

Understand suitable geometry before making a purchase. Frame Finder and fit-led Pinarello guidance put your position at the heart of the conversation.

Pinarello
Around CORE

Cycling, community and advice.

Meet the teams we support, explore Jon’s local recommendations and find clear answers to your bike fitting questions.

Proud sponsors

Supporting local cycling

Exeter University Cycling Team, Plymouth University Cycling Team and CORE Bike Club.

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Bike fit advice

Your questions, answered

What a fit costs, when to book before buying a bike and how to choose a fitter you can trust.

Read the bike fit guides →
IBFI Level 2 certified fitter badge for Jonathan Underhill
Professional trust

Qualified and equipped.
Focused on you.

Frequently asked questions

How much does a bike fit cost?

Align is £250, Balance £295 and Complete £495. TT/Tri options are £300, £345 and £545 respectively. A £50 deposit is paid when booking these fits; this forms part of the total price.

Which bike fit should I choose?

Start with Find Your Fit for guidance, or book a free 30-minute consultation with Jon to discuss your riding, goals and concerns.

Where is CORE Bike Fit based?

The independent studio is at 16A Fore Street, Topsham, Exeter, Devon, EX3 0HF. Contact Jon before travelling if you need access or arrival information.

What should I bring?

Bring your bicycle, cycling shoes and the kit you normally ride in. Check your Acuity booking confirmation for any appointment-specific preparation.

Can you help before I buy a bike?

Yes. Frame Finder explores suitable bike geometry using the Purely Custom adjustable fit jig, helping you make an informed choice before buying.

How long does a bike fit take?

Appointment length depends on the service you choose. Your Acuity booking shows the appointment details; contact Jon if you need help choosing.

Topsham · Exeter · Devon

Ready to create your optimal rider experience?