Bike Fitting Explained: What Actually Happens in a Fit, and Why It Matters

By Mike · Updated 13 July 2026

A good bike fit is not someone eyeballing your knee and raising your saddle. It is a structured process that matches the bike to your body, and it should leave you with two things: a position that resolves the problem you came in with, and a record of exactly what was changed and why. This guide walks through what happens in a fit at our Cheltenham studio, who actually needs one, and how to tell a proper fit from a quick once-over.

Who needs a bike fit

Three groups, in our experience. First, riders in pain: knee soreness, numb hands, a stiff neck, saddle discomfort, hot feet. Pain on the bike is almost always a position problem before it is a fitness problem, and millimetres matter. If knee pain is your issue, we have written a detailed guide to cycling knee pain covering the specific causes.

Second, riders about to spend money. Knowing your fit coordinates before you buy turns bike shopping from guesswork into a filter, which is why we usually recommend a fit before buying rather than after, especially for pre-owned bikes where the frame cannot be exchanged.

Third, riders chasing performance. More power comes from a position you can hold, not just a lower stem. Aero gains that cost you comfort after 40 kilometres are not gains.

What actually happens in a 90-minute fit

The interview. We start by talking, not measuring. What hurts, when it hurts, how long you have ridden, what you are training for, injury history. A fit that skips this step is fitting a body, not a rider.

Off-bike assessment. Before you pedal, we look at how you move: hip and hamstring range of motion, flexibility tests, and any functional differences between your left and right sides. Bodies are asymmetric, and a fit that treats both legs as identical misses the most common causes of one-sided pain.

On-bike observation. This is the core of a functional fit. You ride at normal effort while we watch how your body actually behaves through the pedal stroke: whether your pelvis stays level or one hip drops, how your knees track, whether your pelvis rotates to one side on the saddle, what your upper body and head do as you fatigue. These patterns tell us things a static measurement never will.

Adjustments, one at a time. Saddle height, setback and tilt, cleat position on each foot individually, and cockpit reach and drop. Each change is made for a stated reason and checked by watching you ride again. We record before and after values for every change, so nothing about your position is a mystery afterwards.

What you take home. Every comprehensive fit at MKP ends with a written fit report: your full measurements, what we observed, what we changed and why. Where we find tight or weak areas driving the problem, you also receive a structured six-week exercise program targeting them, phased from mobility work through to strength and on-bike integration. The bike change fixes the position; the exercise work fixes the pattern that created the problem. Most fits we know of hand you neither, and we think that is the difference between an adjustment and a fit.

What a fit does not do

Honesty matters here. A fit will not make up for a frame that is fundamentally the wrong size, which is why sizing comes first and fitting second. It will not instantly cure pain that has an underlying medical cause; if your symptoms persist after a sound position change, the right referral is a physiotherapist, and a good fitter will say so rather than sell you another session. And it will not turn a harsh, race-geometry bike into an endurance bike. Sometimes the honest outcome of a fit is the news that a different bike would serve you better. When that happens we can show you inspected pre-owned options in a geometry that suits your body, and put your fit numbers to work immediately.

What it costs and why it pays for itself

A comprehensive road fit at MKP is $180, and a time trial or triathlon fit is $240. Buy a bike from us and the fit is discounted to $150 for road and $200 for TT and tri, because we would rather you ride a bike that fits than save the difference.

Measured against the alternatives, a fit is cheap. A wrong-sized bike is a four-figure mistake. A season of physio for a preventable overuse injury costs more than the fit that would have prevented it. And upgrades bought to fix a comfort problem, new saddles, shorter stems, gel gloves, routinely cost more than addressing the position underneath.

How to book, and what happens next

Our fits run from the studio in Cheltenham, and we see riders from across Bayside and south-east Melbourne as well as further afield. Book through the bike fitting page. After the fit, ride normally for one to two weeks while your body adapts, keep an eye on the specific things noted in your report, and come back for a follow-up check if anything needs fine-tuning.

If you are still researching, start with the symptoms. Our guides to knee pain and saddle height problems explain what your body is telling you, and what a fit does about it.