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Bike Fitting
Bike Fitting & Bike Set-up
Every rider is unique in respect to flexibility, biomechanics and riding style. There are few standard assumptions that apply when truly fitting a rider to a bike. The Yellow Jersey Cycles bike fit studio uses Retül 3D motion-capture technology that allows the capture of less than 1mm accurate data taken from key body points in real time. This data is then utilised to provide the most comfortable and efficient position to maximise performance.
The Retul 3D system incorporates incredibly precise 3D motion capture technology, immediate reports and a millimetre specific digitising tool to provide the most accurate dynamic fitting solution in the industry.​​​​​
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Measurements made by traditional tools have one thing in common: they are subject to human error and therefore can be inaccurate. Even slight inaccuracies can completely change the rider’s feel after a ride. Retül uses motion capture technology that is accurate to within less than a millimetre, creating true objective data, which can be utilised by our fitter for the perfect biomechanical fit. Retül will always compare left and right for side-to-side differences. As a certified fitter, we ensure accurate placement of electrodes and therefore the most accurate data, knowledgeable interpretation of data and assessment of physical asymmetries and contributing mechanical issues that can create undesirable ranges. ​
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A bike fit using Retül technology typically includes the following steps:
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The fitter conducts an initial physical assessment of the rider, and at this point can address the rider's concerns about performance, pain, or any other issues the rider hopes to alleviate during the bike fit.
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LED markers are strategically placed on eight anatomical points of the rider: the wrist, elbow, shoulder, hip, knee, ankle, heel, and toe.
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As the rider pedals, Retül's sensor bar gathers real-time, three-dimensional data of the rider's pedal strokes and movements.
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Retül's rotating platform allows the fitter to collect data for both sides of the rider without the rider leaving the bike.
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The rider's data is compiled into a reader-friendly report for analysis by the fitter. The fitter can then assess the rider's position and make necessary adjustments.
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The Zin, Retül's handheld digitizer, allows the fitter to digitally measure the rider's bike at 13-15 points, depending on the bike. The Zin can measure fixed points, contours, and curves, and provides a complete digital map of the bike.
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The fit information is saved and stored on our fitter's database.
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The data includes the rider's personal profile, measurements from the fit, bike measurements, and the rider's final fit position.
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For more information, watch this film about Retul 3D Dymanic Analysis Bike Fitting from BRITISH CYCLING
Bike Fitting & Bike Set Up Booking
1 hr
100 British pounds
2 hr
150 British pounds
3 hr
275 British pounds
1 hr
25 British pounds
1 hr
25 British pounds
30 min
15 British pounds
Saddle Fitting
Buying a saddle can be one of the most confusing areas of cycling with a wide range of sizes and shapes available. As comfort while riding is a significant solution to improving your cycling, using the correct saddle is vitally important.
To help your decision making we offer a saddle fitting service which includes measuring your sit-bone width using the RETUL Digital Sitbone Device, discussing the options available based on your type of cycling and flexibility and then providing a test saddle to try before you buy. (Please bring your existing saddle and/or bike to your appointment)
We offer test saddles from Fizik, Selle SMP and ISM and can also source saddles from Selle Italia and Bontrager.
Cleat Fitting & Alignment
Although the position of your cleats on your cycling shoes may seem trivial, it often goes one of two ways: never noticing them again or pain. To optimize your cleat position and reduce the risk of injury or pain, we focus on the key three elements of cleat position:
- Fore-aft position
- Lateral position
- Rotation
We can either adjust and re-align your existing cleats or supply and fit new. We offer cleat fitting and alignment of SHIMANO SPD/SPD SL, LOOK or SPEEDPLAY cleats.
Frequently Asked Questions
Your bike fit questions answered. If you don't see the answer to your question on this page please CONTACT US.
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1. What defines a good bike fit?
In our view, a good bike fit tailors the bike, equipment and riding position to best suit the rider's body type, performance goals, flexibility and injury history. The aim of every fit is to provide the rider with a position on their bike that is stable, comfortable, powerful, aerodynamic (where necessary) and reduces the risk of injury.​
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2. Do I need a bike fit?
The answer is 'probably'. There are very few riders that would not benefit from an accurate bike fit in some way. Whether you're an elite level athlete looking at improving race day performance or a new and inexperienced rider looking to improve comfort or reduce injury risk an accurate bike fit can help. Just because a rider is not getting injured does not mean their bike position is optimal.
3. When are bike fitting bookings available?
Level 1 - Standard, Level 2 - Detailed and Level 3 - Detailed x2 are available at Yellow Jersey Cycles at different times, please check the booking section above for current availability.
4. What should I bring with me?
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Your bike
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Cycling shorts (lycra/tight fitting)
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Cycling Jersey (lycra/tight fitting and preferably short sleeve or sleeveless as it helps with accurate positioning of the measurement LED's)
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Cycling shoes with cleats
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Clip in pedals (we cannot complete a Retul fit with standard flat pedals)
5. What's the difference between your levels of fit?
Retul is the only dynamic measurement tool that offers sub millimeter levels of accuracy and our Retul fitter is Retul certified, having been trained by one of the most respected, knowledgeable and experienced bike fitters.
Level 1 - the Standard Retul 3D dynamic bike fit using Retul 3D motion capture technology. The Level 1 fit offers a cheaper alternative with the assessment of position, review of cleat position and re-setting the bike as necessary to achieve an ideal position.
Level 2 - the Detailed Retul 3D Dynamic bike fit is most popular and all round bike fit using Retul 3D motion capture technology to take measurements directly from the rider while they're riding under a realistic load on the bike. Every aspect of the rider motion is considered - rider strength and flexibility, seat bone measurement and saddle sizing, cleat position, knee movement - all contact points on the bike are adjusted as necessary. A full report is completed including images of before and after, final position angles achieved and full measurements of the bike post fitting.
Level 3 - the same process as the Level 2 fitting, but applies to 1 rider with 2 types of bike (cheaper than booking two separate sessions).
6. What does it cost?
Level 1 - £100
Level 2 - £150
Level 3 - £275 (same rider, 2 different bikes)
7. Will it make me faster?
In the short term an accurate bike fit may not make you faster. It will however make you more comfortable and put you in a riding position where you have the most potential to achieve your optimum results. Over the long term you should see performance gains from an accurate and suitable fit.
8. Do I have to be buying a bike to get a fit from you?
No. We're happy to fit you on any type or brand of bike, whether it be a road bike, gravel bike, time trial or triathlon bike, however, we do not complete fitting on mountain bikes. Riders of all disciplines and performance levels from novice to world class will benefit from an accurate bike fit.
9. How do I book?
Please use our booking links above to make you booking. You will be asked to pay a deposit of £25 against each booking. If you have any questions regarding booking or fitting, please CONTACT US
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WHAT our customers SAY
stuart mulchinock
Went for 3D Retul bike fit yesterday! Being a novice rider thought this was essential and the service and knowledge was 5* . Nathan was first class he talked me through the fit and gave me advice on other aspects of set up and maintenance! Worth a visit.
geoff turpin
The results have been remarkable. The following Saturday I did a Charity ride of 104 miles. The lower back pain I had suffered pre the bike fit was non existent. The pins and needles I had been getting, in my fingers, after 10-12 miles have been greatly reduced in severity and don’t develop until much later into a longer ride.
I would thoroughly recommend your bike fit service and attention to detail.
richard price
Many thanks for such a meticulous service with the bike fit. I took both the TT and race bike straight to Hog Hill for 2hr test ride, not only did i feel more powerful, they're more comfortable too. Despite the large adjustments I've had no difficulties with cramp or stiffness - thanks again.
