Bike fitting guide

Bike fit is one of the most important things to consider when buying a bike. Read through this guide to see how you can find a Rad Power Bikes ebike that can best fit you and your needs.

What to Measure:

To find the best fit for your needs, you will need to measure your “real inseam.” This is your inside leg length — the distance between your body where it sits on your bike saddle and the ground.

This will typically be an inch or two longer than the length of your trousers, but you’ll want to measure to be sure.

How to Measure Your Real Inseam:

Gather the tools needed:

  • Medium-width hardcover book
  • Tape measure
  • A wall you can stand against
  • A trusted friend or relative
  1. Wearing your regular riding shoes and with your back to the wall, stand with your feet spread so there is about 7 inches between them. This is about the distance apart your feet would be when straddling a bike with your feet on the ground (standover height).
  2. Place the top or bottom of a hardcover book against the wall, with the spine of the book facing upward. Slide the book upward, toward the base of your torso, until it is solidly against your body.
  3. Measure from the ground to the top of the book spine. If you have a buddy helping you, get them to measure from the floor to the top of the book spine while you hold the book in place. If not, carefully hold the book in place against the wall, turn around, and measure from the ground to the top of the book spine.

How is minimum and maximum seat height measured?

The minimum and maximum seat heights are measured from the top of the seat to the top of the pedal when it is at the bottom of the pedal stroke, as indicated in the images below:

Minimum Seat Height

 Maximum Seat Height

Adjusting Seat Height

When adjusting the height of your seat, do not raise the seatpost beyond the minimum insertion marking. If the seatpost projects from the frame beyond these markings (shown far right), the seatpost or frame may break, which could cause a rider to lose control and fall.