Any idea where I can get 155mm crank?

[TsPoet]

Hi everyone!
I've just started to ride a road bike. A guy in a bike shop told me that I need to change my crank to 155mm. He suggested me to get T.A. crank, but I can't find it online. Could anyone recommend me a good brand other than T.A.?

Thanks!

I also wanted to add, though, that 155 are pretty short, you may want a second opinion and/or a bike fit. I have 160s on all but one bike and 155 on my velo - I can sure tell how short they are.
Also, Itself and I ride recumbents, they are much more popular on bents where you can't stand up and spinning is your power.
Also, also - you need more info than crank arm length, double? triple? what kind of BB?