Stem + Bar Reach

lochindaal

I am doing a self build moving from a Specialized Allez to Roubaix.

The frame size is the same on both. On the Allez it has a 110mm stem with 70mm short reach bars.

Most bars seem to have around a 80mm reach. If I buy a 100mm stem will this balance out the distance or cause a different handling feeling?

FSR_XC

Obviously the reach will be the same.

I can't imagine it will make the handling (on the same bike) any different.

Aren't the frames a different geometry?

A different head angle & fork rake will change the handling more.