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Aerodynamic Non-Series ACR Stem streamlines cockpit with fully hidden routing
What Our Gearhead® Experts Are Saying:
"I’ve installed this stem on a few integrated road setups, and it’s one of the cleanest cable-routing solutions out there. The ACR system makes the cockpit look super tidy, and the stiffness is noticeable when you’re wrenching on the bars during hard accelerations. It is on the heavier side, but the build quality, finish, and routing integration make it a solid choice for modern aero frames."
We turn to the FSA Non-Series ACR Stem when we want a streamlined cockpit that matches the modern road aesthetic—sleek, stiff, and seamlessly organized. Built around ACR—Aerodynamic Cable Routing—it’s designed to fully conceal brake hoses and shift housing through compatible bars, headsets, and frames, giving our road bike a wind-cheating, ultra-clean front end that feels as fast as it looks.
The forged 6061-T6 aluminum body keeps steering precise and responsive, even when we’re putting down power on climbs or sprinting out of corners. Chromoly hardware ensures long-term durability, while the included spacers help dial in stack height without interrupting the integrated look. From the bead-blasted anodized finish to the low-profile frontal shape, every detail reinforces the stem’s purpose: maximizing performance while elevating cockpit aesthetics on modern road builds.
Details
- Stem for road riders and who take the occasional gravel path
- Aerodynamic Cable Routing tech improves wind slicing capabilities
- Low-profile frontal area improves sleek aesthetics
- 6061 T6 body and faceplate and chromoly hardware for lasting durability
- Includes 10mm, 5mm, and 5mm contoured spacers for stack tuning
- Item #FSAD12M
- Material
- alloy
- Length
- 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm
- Rise
- -6°
- Clamp Diameter
- 31.8mm
- Claimed Weight
- [100mm] 8.3oz (235g)
- Stack
- 30mm
- Bar Attachment
- 4-bolt
- Includes
- 2 10mm spacers, 5mm spacer, 5mm contoured spacer
- Manufacturer Warranty
- 2 years
- Activity
- road cycling, gravel

World Class Bike Components
Full Speed Ahead (FSA) produces world class bicycle components for road cycling and mountain biking and supports many of the world’s leading road and mountain bike teams.
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FSA NS ACR Stem for road and gravel cyclingDurable chromoly hardware for extended useSleek low profile design for better aesthetics4-bolt bar attachment for secure fitIdeal for male and female road ridersAerodynamic Cable Routing for improved performanceLightweight alloy construction at 235 gramsAvailable lengths from 70mm to 140mmLearn more about FSA NS ACR Stem













