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How To Choose The Frame Size ?
October 26,2019

More and more bicycle rider purchase carbon bicycle frame on internet,such as some online store.But many customers is hard to confirm which size will they prefer,when they purchanse frame or complete bike.Superroad provide carbon road bike frame,MTB frame and ebike frame as well.Because of the time different,sometimes received some inquiry message about the frame size when our team mate in sweet dream. In order to easy for choose suitable size frame for yourself,Superroad team made a bike size chart,as below:

Road Bike Size

Rider Hight
Bike Frame Size
Feet/Inches
Centimeters Centimeters Size
4.1''-5.0'' 148-152cm 47-48cm XXS
5.0''-5.3'' 152-160cm
49-50cm XS
5.3''-5.6'' 160-168cm 51-53cm S
5.6''-5.9'' 168-175cm 54-55cm M
5.9''-6.0'' 175-183cm 56-58cm L
6.0''-6.3'' 183-191cm 58-60cm XL
6.3''-6.6'' 191-198cm 61-63cm XXL


Mountain Bike Frame Size

Rider Hight
Leg Inseam Bike Frame Size
Feet Inches
Centimeters Inches
Centimeters Inches Size
4.1''-5.1'' 148-158cm 24-29'' 148-152cm < 14'' XS
5.1''-5.5'' 158-168cm 25-30'' 152-160cm
15''/16'' S
5.5''-5.9'' 168-178cm 26-31'' 160-168cm 16''/17'' M
5.9''-6.0'' 178-185cm 27-32'' 168-175cm 17''/18'' L
6.0''-6.3'' 185-193cm 28-33'' 175-183cm 18''/19'' XL
6.1''-6.6'' 193-198cm 29-34'' 183-191cm >19'' XXL


The easiest calculate method,as below:

-Road Bike Size = Leg Inseam(cm)×0.7

-MTB Bike Size = Leg Inseam(cm)×0.66


Mark:How to measure the leg inseam length?

Taking off your shoe and stand on the gound,the gound to your crotch length is your leg inseam.