FSA

FSA SMR ACR Stem

Full/Semi Internal Masterclass

Familiarity:

I've put it through the wringer

I’ve got this on my gravel bike that uses the ACR internal routing system. As far as non-proprietary internal routing systems go (you find the ACR system on several different brands of bikes), I think ACR is the most refined and easiest to work with. This is my preferred stem to use with the ACR system, because you can run the cables neatly out of the head tube and under the stem with the included adapter, or you can route them fully internally through the stem and into the bar using the appropriate adapter, which is also included. The stem comes with two 10mm and two 5mm spacers that split for easy addition/removal, and works great for gravel or road bikes with an ACR headset. This option is a native standard 1 1/8” steerer clamp diameter, and the non-ACR version we carry is a 1 1/4” clamp for some Canyon, Giant bikes.