The FSA NS ACR is an alloy road and gravel stem built around FSA's Aerodynamic Cable Routing system, which carries hoses and cables from the handlebar into the frame without exposing them to the wind. A matching ACR frame and headset are required, so check that the bike accepts the system before ordering.
Body and faceplate are 6061-T6 aluminium with chromoly hardware, and the low-profile shape holds a 31.8mm handlebar at a -6 degree angle. Fork clamp stack height is 30mm, and the routing places no limit on how far the bars can rotate. It pairs with FSA's ACR compact bars and the K-Wing AGX.
Quick Facts
| Feature |
Specification |
| Compatibility |
Requires an ACR-compatible frame and headset |
| Handlebar Clamp Diameter |
31.8mm |
| Steerer Diameter |
1-1/8 inch |
| Material |
6061-T6 alloy body and faceplate |
| Claimed Weight |
235 g (100mm) |