Size Guides

Bike Sizing

Whether a bike is the right size for you all depends on three factors: the geometry of the bike, your body’s unique proportions, and the type of riding you’ll be doing.

A lack of conformity in sizing between manufacturers may make it a little more complicated to find the right size of bike for you. This is because some manufacturers will include the saddle post in their size measurements, and others won’t. However, most manufacturers base their measurements on the length of the seat tube (that it, the vertical tube from the pedal to the bottom of the top bar).

Two helpful measurements to know are the length of your inside leg (with your shoes on), and your height. Ideally, the height of the bike’s top bar will be at least 2cm shorter than your inside leg length.

If your height is at the top end of one size and the bottom of another, you might consider measuring for the charmingly-named ‘ape index’: that’s the length of your arm span minus your height. If you have a positive ape index, you’ll probably want the larger size. If it’s negative, then go for the smaller one.

Finally, consider what kind of cycling you’ll be doing, as this might affect your size requirements. For example, if you want a bike that’s easy to manoeuvre for taking off-road, you might choose a slightly smaller bike than usual. On the other hand, if you plan on picking up as much speed as you can on long stretches of road, you might prefer a larger size. So give some thought to what you’re going to want from your bike.

If the info below doesn't help don't hesitate to contact us with your questions

Women's Bikes

Gone are the days of what critics have labelled the ‘shrink it and pink it’ approach to women’s bike design! Most bike manufacturers now recognise that many women need bikes suited to distinctly female geometry, not simply shrunk-down bikes originally designed with men in mind.

Different manufacturers have different approaches to designing bikes for women. Some use a shorter stem, smaller handlebars, shorter cranks, and a wider saddle. Others design the frame itself differently , with a shorter top tube, a more relaxed head tube angle, a taller head tube, and steeper seat tube angle.

Saddle discomfort is the most common complaint among female cyclists, so look for a flexible saddle, foam padding, or cutaways on the top of the saddle to relieve pressure on soft tissues. Sometimes the saddle discomfort comes from the geometry of the bike itself; many women prefer a bike that encourages an upright riding posture, as this encourages even weight distribution.

Road Bikes

Road bikes are designed to go faster than other bikes – that means they are smaller, lighter and more aerodynamic, with larger wheels.

Men's Road Bikes
XXS XS S M L XL XXL
Frame Size (cm) 47 - 48 49 - 50 51 - 52 - 53 54 - 55 56 - 57 - 58 58 - 59 - 60 61 - 62 - 63
Rider Height (ft) 4'10" - 5' 5' - 5'3" 5'3" - 5'6" 5'6" - 5'9" 5'9" - 6' 6' - 6'3" 6'3" - 6'6"

 

Women's Road Bikes
XXS XS S M L
Frame Size (cm) 44 - 45 - 46 47 - 48 - 49 50 - 51 - 52 54 - 55 56 - 57 - 58
Rider Height (ft) 4'10" - 5' 5' - 5'3" 5'3" - 5'6" 5'6" - 5'9" 5'9" - 6'

 

Mountain Bikes

Use our mountain bike size guide to help you make the most of cycling in the great outdoors.

Men's Mountain Bikes
XS S M L XL XXL
Frame Size (inch) 13 - 14 15 - 16 17 - 18 19 - 20 21 - 22 23 - 24
Rider Height (ft) 4'10" - 5'2" 5'2" - 5'6" 5'6" - 5'10" 5'10" - 6'1" 6'1" - 6'4" 6'4" - 6'6"

 

Women's Mountain Bikes
XS S M L
Frame Size (inch) 13 - 14 15 - 16 17 - 18 19+
Rider Height (ft) 4'10" - 5'2" 5'2" - 5'6" 5'6" - 5'10" 5'10" - 6'1"

 

Hybrid Bikes

The clue’s in the name! A hybrid bike combines the large wheels of a road bike with the chunky frame and upright position of a mountain bike, meaning that it delivers both comfort and speed.

XS S M L XL XXL
Frame Size (inch) 13 - 14 15 - 16 17 - 18 19 - 20 21 - 22 23 - 25
Rider Height (ft) 4'10" - 5'1" 5'1" - 5'5" 5'5" - 5'9" 5'9" - 6' 6' - 6'3" 6'3" - 6'6"

 

Kid's Bikes

The size of the wheel denotes the wheel diameter oTf the bike and this roughly relates to the age of child that the bicycle is suitable for.

12" Wheel 14" Wheel 16" Wheel 20" Wheel 24" Wheel 26" Wheel
Frame Size (cm) 2 - 4 years 3 - 5 years 5 - 7 years 7 - 9 years 9 - 11 years 11+ years
Rider Height (ft) 2'10" - 3'4" 3'1" - 3'7" 3'7" - 4' 4' - 4'5" 4'5" - 4'9" 4'9"+