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Bikes Sizing & Fit
Bikes come in sizes just like clothes. The key to getting the right fit on your bike is to have your bike shop help you figure out what general size you are. The size of the bicycle is critical for comfortable riding. Back pain, knee pain, shoulder pain and neck pain are NOT a normal part of riding a bike, but rather a sign that the bike you are riding doesn't fit. Plus, a bike too large or too small can be difficult to control. Your appropriate frame size is based on two body measurements: inseam and torso length. Torso length determines the "reach" of the frame (how long it is) while inseam determines seat-tube length. Your Schwinn dealer can help you figure out these two measurements and how to find the frame size that fits you, but in general bikes get longer as they get larger.
 
 
Helpful hint: Every Schwinn bike has a sizing chart on it that tells you the general range of heights the bike will fit.
 
Schwinn Fit System

Fine-tuning the fit:
After your dealer has helped you find the right size bike, he or she can help you fine-tune the fit - just like a tailor does alterations on a suit or dress. Your dealer may make adjustments to your riding position and/or swap out different components - such as the handlebars, stem or saddle -- to solve any comfort and fit issues. Some more common areas of discomfort can be neck, back, arms and butt. If it hurts, you likely need to fine-tune your bike's fit. Bike fitting should be done by a trained professional and will cost an additional $75 - $250 depending on the length of the session.

A quick fit check:
When your bike is adjusted correctly, you'll have a saddle height that leaves a slight bend in the knee when your foot is at the bottom of the pedal stroke and a reach that leaves a slight bend at your elbows when you are gripping the handlebars. (That slight bend in your elbows actually forms a shock absorber for your upper body).