How to Fit a Bicycle Seat

Fitting a bicycle seat to your bike frame is one of the most important adjustments that you can make. The proper fit will not only make your bike more comfortable to ride, it can help you ride more efficiently and avoid injuries.

Instructions

Difficulty: Moderately Easy

Mounting the Seat Post

Things You’ll Need:

Bicycle seat mounted on a seat post Set of Allen wrenches Adjustable wrench (optional) Correctly installed bicycle pedals
Bicycle seat mounted on a seat post
Set of Allen wrenches
Adjustable wrench (optional)
Correctly installed bicycle pedals

Step 1

Slide the seat post into the down tube of your bicycle by twisting the post back and forth. It is easier with the seat attached to the seat post. Lightly tighten the skewer or nut that secures the seat post to the bike frame. If you have your old seat and seat post handy, measure the distance from the top of the seat to where the seat post contacts the bike frame. This will help when adjusting the new seat position.

Step 2

Move one pedal to the six o'clock position and sit on the seat. Raise or lower the seat post so that your knee has a 5-degree bend when your foot is on the pedal.

Step 3

Tighten the seat post to the frame using an Allen wrench, then quickly release the skewer or nut.

Adjusting the Seat on the Seat Post

Step 1

Loosen the four Allen nuts that attach the seat rails to the top of the seat post. Do not remove the nuts.

Step 2

Move the seat backward or forward on the seat post so that your legs extend straight down to the pedal. A properly adjusted seat will take stress off of your lower back and shoulders. Avoid moving the seat too far forward or backward. It helps if you can analyze your position using a mirror or have a friend look at your profile. When you have the correct position, tighten the Allen nuts on the seat post.

Step 3

Tilt the nose of the seat downward or upward after loosening the nut underneath the seat. Avoid tilting the nose too far down, causing you to put pressure from your hands onto the top of the handlebars. Avoid tilting the nose too high, causing the seat to rub against delicate body parts.

Tips & Warnings

Stand your bike next to a mirror so that you can look at your profile. Have a friend assist you with the seat adjustments. Take your bike out for a spin to test the position.

Stand your bike next to a mirror so that you can look at your profile.

Have a friend assist you with the seat adjustments.

Take your bike out for a spin to test the position.

Always carry a set of Allen wrenches for adjustments on the road. Avoid mounting your seat too low.

Always carry a set of Allen wrenches for adjustments on the road.

Avoid mounting your seat too low.

Article Written By Allen Smith

Allen Smith is an award-winning freelance writer living in Vail, Colo. He writes about health, fitness and outdoor sports. Smith has a master's degree in exercise physiology and an exercise specialist certification with the American College of Sports Medicine at San Diego State University.

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