FSA OS-99 Stem U 80mm
OS-99 Stem Black, 80mm - Good
$77.58
58% Off
Original price
$ 186.20
Shipping
Flat Rate $7.44
About this item
Brand
Model
OS-99 Stem
Item
904745
Type
Closeout
Size
80mm
Gender
Unisex
Condition
Good
SOLD BY
BackcountryProduct Information
Size: Unisex 80mm
Color: Black
Retail Cost: $186.20
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.
OS-99 Stem (DWGBIIL)
Tech Specs
Responsible Collection
Material
[body] aluminum, [bolts] titanium, [faceplate] alloy/carbon
Length
Rise
6
Clamp Diameter
31.8mm
Steer Tube Diameter
1 1/8in
Stack
Bar Attachment
4-bolt
Claimed Weight
[90mm] 3.6oz (103g)
Actual Weight Notes
Includes
Activity
Questions
About the seller
BackcountryRating
Avg. Ship Time
20 hours