Bike fit guides
Short, practical guides to the numbers behind a bike fit — what each angle means, what the target ranges are, and how to change your position when a number is off.
Knee angle in bike fitting
The 25–35° knee flexion rule at the bottom of the pedal stroke: what it means, how to measure it from a photo, and how to adjust your saddle height.
Read the guide →KOPS explained
Knee Over Pedal Spindle: what the plumb-line test actually measures, what offset is normal for road and TT, and how to move your saddle fore-aft.
Read the guide →Road bike fit angles
The complete reference chart for a road position: knee, hip, torso, elbow and shoulder angles plus KOPS, with target ranges and what to change when a number is off.
Read the guide →TT & triathlon bike fit
The aero position by the numbers: TT target ranges for torso, hip, elbow and knee angles, how they differ from road, and how to get low sustainably.
Read the guide →How to take bike fit photos
The photo is the measurement: camera height, 90° side-on framing, crank at 6 and 3 o'clock, clothing and lighting — everything that makes fit angles accurate.
Read the guide →Saddle too high or too low
The symptoms of a saddle that is too high or too low, how to confirm them with your knee angle at 6 o'clock, and how to adjust the saddle in 5 mm steps.
Read the guide →Is a bike fit worth it?
What a bike fit costs in 2026, what the money buys, and when a professional fitter is worth it compared with a remote fit or a check at home.
Read the guide →Knee pain from cycling
Front, back or outside of the knee: each points to a different fit setting. What to measure first, and how much to change.
Read the guide →