OK, I just checked out the link you gave in another topic, and if your bike has the same set up as the one in the picture, then no wonder you are struggling on the hills! I would never want to go uphill with that gear combo. If you do have a 53/39 in front and a 12-25 in the rear, your easiest gear is 40 gear inches! To give you an idea how high that is, my hubby's easiest gear is 35 gear inches. (and he is a strong boy) My easiest gear is 32. The lower the number the easier it is to pedal uphill.

There are some things you can do to make life easier but we need to know exactly what you have so we can point you in the right direction. Look at your smallest front ring and see if it is stamped with a number. If not, count the teeth. Next, look at the BIGGEST one in the back and count the teeth. Tell me what you got and we can help you. No one (but pros) should be climbing in a 39-25. OUCH

Brenda