Memorial Day Sale
Up to 30% off this year’s gear
More Ways To Save
Memorial Day special deals
OS-99 Stem
Size:
Quantity
Only 1 In stock
Join Summit Club+ and
OS-99 Stem
Let's get one thing out of the way—the OS-99 Road Stem is the lightest stem that FSA makes, and no, the "7050 aluminum body" isn't a typo. By using a proprietary 3D forging technique and special heat treatment ("witchcraft" is the technical name) FSA makes the OS-99 as strong as a heavyweight stem but as light as a part made of pure carbon fiber. To be fair, the faceplate is built partially from carbon, to achieve the perfect balance of strength and weight, and the unbreakable bolts have been forged from titanium, so the OS-99 isn't pure aluminum. The faceplate also has a serrated surface that will grip both carbon and aluminum bars, and a rise of +/- six degrees, depending on which way you set it up.
Details
- 7050 aluminum body
- Titanium bolts
- Alloy and carbon faceplate with serrated grip surface
- 31.8mm clamp diameter
- 1 1/8in steerer tube diameter
- +/- 6 degree rise
- Item #FSA000I
- Material
- [body] aluminum, [bolts] titanium, [faceplate] alloy/carbon
- Rise
- 6°
- Clamp Diameter
- 31.8mm
- Steer Tube Diameter
- 1 1/8in
- Bar Attachment
- 4-bolt
- Claimed Weight
- [90mm] 3.6oz (103g)
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.