crank arm lengths

[It's me man]

Hi, i need some advice please, if i'm riding a 54cm road bike and 1,78m is choice of 172,5 and 175mm crank important? can i compensate with saddle height?

[EZRider]

I am 1.81 and ride a 54 CAAD.

I think a 172.5 crank will work as it does for me.

[gummibear]

You could use either of them

If you like riding big blade then go for the 175 for leverage.If you like spinning then go 172.5.

[gummibear]

I am 1.81 and ride a 54 CAAD.

I think a 172.5 crank will work as it does for me.

How long is your stem?

[JA-Q001]

Do a search, 2 big discussions was done a month back.

[EZRider]

 

How long is your stem?

 

Not sure. I think it's 100 mm.

[davidlangebaan]

I had a bike fit done and was recommended 172.5 cranks on my road bike and 175 on my mtb. I am 181.

 

But my advice to anyone considering buying new kit in that will change the geometry, ergonomics or performance of the bike is to get a bike fit done first! It costs a lot less than buying the wrong size crank, stem, bike, etc. And once done you have the measurements for life.

[Slowbee]

https://community.bikehub.co.za/topic/119440-moving-from-compact-to-normal-crank/