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 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. Stand with your bare feet spread so there are about 7 inches between their inside edge. 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.

    Measuring_Inseam.gif
  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.
  4. Compare the measurement with the chart below. Use the real inseam measurement to see which bike in the chart below would fit you best. If you want to give the bike a try, check out our Where to Ride page HERE to test ride a bike!

Inseam_Chart.PNGOnce you've found a bike that will fit you best, check out this video, where Fritz will take you on a ride through the bike adjustment process to help you have a comfortable ride, or click a heading below to read more about bike sizing.

Recommended Rider Height by Model
Who can ride a Rad Power Bikes ebike?

Riders must be at least 16 years old (or whatever the minimum age to ride an ebike is in your local area). All of our bikes are unisex and most people between 4'10" and 6'5" can ride at least one of our bikes comfortably. Rider proficiency and preferences are also very big factors for rider comfort and safety, regardless of rider measurements. Those with slightly shorter legs may prefer a step-thru design over a traditional bike frame style; the step-thru designs offer the lowest standover heights of our bikes (the standover height is the distance from the top tube to the ground).

If you are near the lower or upper recommended heights for a particular model, your individual proportions, especially your leg length, and your riding proficiency and preferences will determine whether you can ride that bike comfortably.

Which bike would be a good fit for me?

The best way to know if a bike works for you is to try it out prior to buying. Check out our Where to Ride map to see if there are any rental fleets or showrooms near you! On that page, you can also see if you're in one of our Rad Mobile at-home test ride service areas. We'll bring a bike to you to try-- for free!

If you're ready to buy online, first check out the model's product page below, or the guide at the start of this article, to see which bike would be a good fit.

Current models

Model

Recommended rider heights

RadCity 4 5'11"–6'5"
RadCity Step-Thru 3 4'10"–6'
RadMini 4 5'2"–6'2"
RadMini Step-Thru 2 4'10"–5'10"
RadRover 5 5'4"–6'2"
RadRover Step-Thru 1 5'4"–6'2"
RadRunner 1 4'11"–6'2"
RadRunner Plus 4'11"–6'2"
RadWagon 2019 5'2"–6'2"

Legacy models

Bike Model Recommended rider heights
RadCity 2019 16" frame 5'4"–5'-11"
RadCity 2019 19" frame 6'–6'6"

RadCity Step-Thru 2019

4'10"–6'

RadMini Step-Thru 2019 4'10"–5'10"
Minimum and Maximum Seat Heights by Model
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.jpg

Minimum Seat Height

Maximum_seat_height.jpg

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.

Minimum_insertion.PNG

Current models

Bike model Minimum seat height Maximum seat height
RadCity 4 28" 37"
RadCity Step-Thru 3 24.5" 33"
RadMini 4 26" 35"
RadMini Step-Thru 2 24" 31"
RadRover 5 28" 36.5"
RadRover Step-Thru 1 28" 37"
RadRunner 1 25.25" 36.5"
RadRunner Plus 26" 37.5"
RadWagon 2019 27" 36.5"

Legacy models

Bike model Minimum seat height Maximum seat height
RadCity 2019 16" frame 26" 34.5"
RadCity 2019 19" frame 29" 38"
RadCity Step-Thru 2019  24.5" 33"
RadMini 2019 26.5" 33"
RadMini Step-Thru 2019 24 31
RadRover 2019 28" 36.5"

Previous model heights may vary slightly.

Warning_-_Transparent.png Before your first ride, we recommend having a local, certified, and reputable bike mechanic, who specializes in bike fitting, help you get the best fit for a safe ride.

Questions or comments? Contact us!

Email: info@radpowerbikes.com

Phone: (800) 939-0310 x 1