Here’s how to tell if the bike is truly right for you, and specific points on how you can fine tune the seat and handlebars to make it perfectly comfortable for you.
Frame Size:
The first step is getting the right size bike, so stand over the frame with both feet flat on the ground. A properly-sized road bike frame will allow an inch or two clearance between the top tube of the frame and your crotch. A mountain bike should aim for twice this distance.
Seat Height:
Your seat height should be set to a height that allows your leg to extend until it is almost completely straight when you are sitting on the seat. There should be only a slight bend to the knee when your foot is on the pedal in the bottom position. A common mistake is for people to think that they should be able to sit on their seat touch the ground. For maximum comfort, you want your seat to be level.
Handlebar Position
The goal of handlebar height adjustment is to find the position where you can ride comfortably without putting strain on your back, shoulders or wrists
Your handlebars should be at least as high as your seat, or even above it, so you can ride upright. If your handlebars are lower than your seat you’ll be pushed into your handlebars, and you’ll place more stress on your wrists, arms, neck, and back.
Making sure your bike fits is of utmost importance to cycling injury free.