Firstly, I have been fit before, but have always moved around pad fore-aft, width, extension length, etc...trying to find the most comfortable position.

What *should* my arms look like when in aero?

Looking at several pics, it looks like upper arm to forearm should be about 90degrees, maybe a bit more reached out.

And then the aerobar pad looks like it should rest somewhere around the back 1/3rd of your forearm.

And after that, do you want the shifter body to be about at the end of your thumb?


Moving to a new bike, trying to decide how long to cut extensions.
Obviously there is a bit of room for personal fit, but wondering what protocol is.

Thanks.