Road bike for 6 Foot I want to buy a bike. I have a bike who may interest me, it is a Tri Bike 51cm. I was wondering if it was OK for me.
I know that for my height 53-56 cm is better but I'm only 115 pounds.
Would that be OK for me?
A 51cm frame sounds too small for you, assuming you're average limb length for your height.

You can put the saddle up really high, but that makes it a more aggressive body position, and your seat post is not as well embedded in the frame.

You don't mention your age - I'm guessing you may still be growing, in which case the too-small frame will be getting smaller as you grow.

Answer Pass on this bike - there will be another.