Originally Posted by norwood

You need to be far more specific with your information. 10spd bike? As in 10 total (2 in front / 5 in back)? Or a more modern version as in 10spd in back and 2 or 3 in front? A 10 spd is not a 21 spd. Not really sure what you mean. If you can't describe it, post some pictures.