Mountain Bike Frame Size Height
Biking experts required: What size frame do i need!?
I am buying a mountain bike, althought the top frame slants down at an angle away from the handlebars and so is not horizontal, making getting the right frame size difficult for this novice. I am buying the bike online, because of the price, and none of my local bike shops stock the bike so I cannot try it out for size.
I know that with mountain bikes vs road bikes, you need to get a frame which is a few inches smaller than the size you need for the road bike frame.
I have an inside leg measurement of around 740-750mm. I am 5foot 8 inches tall (177cm) and I have a well proportioned, slim/medium build.
The exact STANDOVER height of this mountain bike are as follows:
15″ frame
716mm standover
17″ frame
752mm standover
19″ frame
784mm standover
Which size bike would suit me best?
Thanks!
Visit Colorado Cyclist’s sizing guide:
http://www.coloradocyclist.com/bikefit/
You’ll want at least 40 mm difference between your bike standover height and your crotch (must measure your inseam according to the guidelines outlined in the fitting guide above). Many MTB fitters say that top tube length is a more important measurement.
According to CC website:
In many ways, though, it is more important to fit a mountain frame by the top tube length needed, rather than by the seat tube length. For instance, you might be able to get to the proper frame clearance, saddle height and neutral knee position (see below) on either a 17″ frame or a 19″ frame. Yet the 19″ frame will likely have a top tube 1″ longer than the 17″ frame, which changes your stem length accordingly. Or, one manufacturer’s 17″ frame may give you a 22″ top tube, while the next one’s 17″ gives you a 22.8″. More on this below… just make sure that you’ll be able to work out your top tube and stem length for a given frame.
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