Bike Size Guide
Matching you to the right size bike – what’s your height?
To help our customers choose the right size bike we provide a suggested height for the various frame sizes available.
In order to accurately match the correct frame to your height it’s essential you measure your height accurately!
To best measure your height, stand against a wall with your shoes off. Keep your legs together and your shoulders back. Carefully place a pencil on top of your head and mark the wall – for best results get a helper to mark the wall for you. Then measure the mark on the wall with a tape measure.
If your height is on the cusp of the range your reach is often the deciding factor in which size to go for. To find out if you have a short or long reach measure your Ape Index (your arm span minus your height) – if you have a positive ape index then go for the larger size, if you have a negative ape index go for the smaller size.
Stand over height
Stand over height is the clearance between the top of the top tube (also known as a cross bar) and the bottom of your crotch. It’s important that you have adequate clearance in this area to avoid contact when you’re stopped and astride the bike. For road and hybrid bikes 1 to 2 inches of clearance is required, mountain bikes require 2 to 4 inches.
What type of bike and what type of riding?
Different types of bikes are sized in different ways. A 58cm road bike
will be quite a different size to a 58cm time trial bike – so it’s
important you look at the sizing chart for the type of bike that you
are purchasing.
Road, triathlon and time-trial bikes are the most important to size
correctly. The reach can determine feel and the frame size required,
stand over height is not as important.
The type or style of riding that you do will also affect which size you
need. For example a mountain biker that wants to ride more aggressively
and would like a more manoeuvrable bike may prefer a size smaller than
they would normally take. Likewise a cross country racer that is
looking for a flatter and speedier mountain bike may prefer a size
larger than they would normally take. Basically there is no right or
wrong when it comes to size – choosing the right bike does come down to
personal preference and what you feel is comfortable and right for the
riding that you do.
Mountain bike sizing chart (hardtail & full suspension)
| Rider Height | Frame Size Suggested | ||
| Feet and Inches | Centimetres | Inches | Size |
| 4' 10" - 5' 2" | 148 - 158 | 13 - 14 | XS |
| 5' 2" - 5 '6" | 158 - 168 | 15 - 16 | S |
| 5' '6" - 5' 10" | 168 - 178 | 17 - 18 | M |
| 5' 10" - 6' 1" | 178 - 185 | 19 - 20 | L |
| 6' 1" - 6' 4" | 185 - 193 | 21 - 22 | XL |
| 6 '4" - 6' 6" | 193 - 198 | 23 - 24 | XXL |
Women's mountain bike sizing chart (hardtail & full suspension)
| Rider Height | Frame Size Suggested | ||
| Feet and Inches | Centimetres | Inches | Size |
| 4' 10" - 5' 2" | 148 - 158 | 13 - 14 | XS |
| 5' 2" - 5 '6" | 158 - 168 | 15 - 16 | S |
| 5' 6" - 5' 10" | 168 - 178 | 17 - 18 | M |
| 5' 10" - 6' 1" | 178 - 185 | 19+ | L |
Road bike sizing chart
| Rider Height | Frame Size Suggested | ||
| Feet and Inches | Centimetres | Centimetres | Size |
| 4' 10" - 5 '0" | 148 - 152 | 47 - 48 | XXS |
| 5' 0 "- 5' 3" | 152 - 160 | 49 - 50 | XS |
| 5' 3" - 5' 6" | 160 - 168 | 51 - 52 - 53 | S |
| 5 6" - 5' 9" | 168 - 175 | 54 - 55 | M |
| 5' 9" - 6' 0" | 175 - 183 | 56 - 57 - 58 | L |
| 6' 0" - 6' 3" | 183 - 191 | 58 - 59 - 60 | XL |
| 6' 3" - 6' 6" | 191 - 198 | 61 - 62 - 63 | XXL |
Women's road bike sizing chart
| Rider Height | Frame Size Suggested | ||
| Feet and Inches | Centimetres | Centimetres | Size |
| 4' 10" - 5' 1" | 147 - 155 | 44 - 45 - 46 | XXS |
| 5' 1" - 5' 3" | 155 - 160 | 47 - 48 - 49 | XS |
| 5' 3" - 5' 5" | 160 - 165 | 50 - 51 - 52 | S |
| 5' 5" - 5' 8" | 165 - 172 | 53 - 54 - 55 | M |
| 5' 8" - 5' 10" | 172 - 180 | 56 - 57 | L |
Hybrid bike sizing chart
| Rider Height | Frame Size Suggested | |||
| Feet and Inches | Centimetres | Inches | Size | Centimetres |
| 4' 10" - 5' 1" | 147 - 155 | 13 - 14 | XS | 47 - 49 |
| 5' 1" - 5' 5" | 155 - 165 | 15 - 16 | S | 50 - 52 |
| 5' 5" - 5' 9" | 165 - 175 | 17 - 18 | M | 53 - 54 |
| 5' 9" - 6' 0" | 175 - 183 | 19 -20 | L | 55 - 57 |
| 6' 0" - 6' 3" | 183 - 191 | 21 - 22 | XL | 58 - 61 |
| 6' 3" - 6' 6" | 191 - 198 | 23 - 25 | XXL | 61 - 63 |
Triathlon and Time Trial bike sizing chart
| Rider Height | Frame Size Suggested | ||
| Feet and Inches | Centimetres | Centimetres | Size |
| 5' 0" - 5' 3" | 152 - 160 | 49 - 50 | XS |
| 5' 3" - 5' 6" | 160 - 168 | 51 - 52 | S |
| 5' 6" - 5' 9" | 168 - 175 | 53 -54 | M |
| 5' 9" - 6' 0" | 175 - 183 | 55 - 56 | L |
| 6' 0" - 6' 3" | 183 - 191 | 57 - 58 | XL |
| 6' 3" - 6' 6" | 191 - 198 | 60 - 61 | XXL |
Jump and Trial bike sizing
As a general rule Jump and Trial bikes are one size fits all; catering for people from heights of 4' 10" - 6' 4" (148cm - 193cm)
Folding bike sizing
As a general rule folding bikes are one size fits all catering for people from heights of 4' 10" - 6' 4" (148cm - 193cm).
BMX bike sizing chart
| Rider Age or Height | Wheel Size Suggested | ||
| Feet and Inches | Centimetres | Age | Inches |
| 3' 7" - 4' 0" | 110 - 122 | 5 - 7 years | 16 |
| 4' 0" - 4' 10" | 122 - 147 | 7 - 11 years | 18 |
| 4' 10" - 6' 4" | 147 - 193 | 11+ years | 20 |
Children's bike sizing chart
| Rider Age or Height | Size Suggested | ||
| Age | Feet and Inches | Centimetres | |
| 2 - 5 years | 2' 10" - 3' 7" | 85 - 110 | Runner bikes |
| 2 - 4 years | 2' 10" - 3' 4" | 85 - 100 | 12 inch wheel diameter |
| 3 - 5 years | 3' 1" - 3' 7" | 95 - 110 | 14 inch wheel diameter |
| 5 - 7 years | 3' 7" - 4' 0" | 110 - 120 | 16 inch wheel diameter |
| 7 - 9 years | 4' 0" - 4' 5" | 120 - 135 | 20 inch wheel diameter |
| 9 - 11 years | 4' 5" - 4' 9" | 135 - 145 | 24 inch wheel diameter |
| 11+ years | 4' 9"+ | 145+ | 26 inch wheel diameter |
Trailer bike sizing chart
| Rider Age or Height | Size Suggested | ||
| Age | Feet and Inches | Centimetres | |
| 3 - 5 years | 3' 1" - 3' 7" | 95 - 110 | 20 inch wheel diameter |
| 5 - 9 years | 3' 7" - 4' 5" | 110 - 135 | 24 inch wheel diameter |
Please note
Trailers generally have a maximum cargo or combined child weight limit
of 45 kilos (100 lbs). Not all trailers are designed to carry 2
passengers.
