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 Chain Reaction Cycles | MTB | Road | TRI | Run

What Frame Size Do You Need?

There are two basic steps to find out what Frame Size you need:

  1. Measure yourself accurately and carefully.
  2. Compare those measurements to the tables below and figure out which size of frame will fit you best.

Step 1 - Measure yourself accurately:

Our sizing guide considers your height and inside leg measurements to give you two points of reference in order to help you choose the right bike size.

All measurements are best taken in your bare feet and with the help of someone else.

First, measure your height:
To measure your height, stand upright against a wall with your legs together and shoulders back.

Place a pencil on the top of your head and mark the wall, measure from the floor to the mark (use centimetres if you are buying a Road, City or Mountain bike, or feet and inches if you are buying a BMX bike).

Next, measure your inside leg:
To measure your inside leg, stand barefoot and measure from the floor, up the inside of your leg.



Step 2 - Compare your measurements:

Now use the specific table below and find out which size you need according to your measurements.


Rondo Gravel Bike Geometry - 2018

Ruut AL / CF1 / CF2 / ST (High Position / Low Position)  
Frame Size 49.5cm (19.5") 53cm (21") 56cm (22") 59cm (23.25")
Rec. Rider Height (Imperial) 5' 5"�-�5' 8" 5' 7"�-�5' 10" 5' 9"�-�6' 2" 6' 1"�-�6' 4"
Rec. Rider Height (Metric) 165�-�172cm 170�-�179cm 175�-�187cm 185�-�192cm
Rec. Inside Leg (Imperial) 29"�-�31" 30"�-�32" 31"�-�33" 33"�-�35"
Rec. Inside Leg (Metric) 73�-�78cm 75�-�82cm 80�-�85cm 83�-�88cm
Top Tube (Effective) 536mm / 538mm 551mm / 553mm 569mm / 571mm 584mm / 586mm
Seat Tube (Centre - Top) 495mm 530mm 560mm 590mm
Headtube 110mm 130mm 160mm 180mm
Chainstay 420mm 420mm 420mm 420mm
Fork AC 400mm / 390mm 400mm / 390mm 400mm / 390mm 400mm / 390mm
Standover 768mm / 764mm 797mm / 793mm 826mm / 822mm 851mm / 847mm
Seat Tube Angle 73� / 73.5� 73� / 73.5� 73� / 73.5� 73� / 73.5�
Headtube Angle 70.5� / 71� 71.5� / 72� 71.5� / 72� 71.5� / 72�
BB Drop 70mm / 74mm 70mm / 74mm 70mm / 74mm 70mm / 74mm
Stack 533mm / 534mm 554mm / 555mm 582mm / 572mm 606mm / 601mm
Reach 373mm / 381mm 382mm / 388mm 391mm / 397mm 400mm / 406mm
Fork Offset 45mm / 55mm 45mm / 55mm 45mm / 55mm 45mm / 55mm