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Item

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

FSA

Model

OS-99 Stem

Item

904745

Type

Closeout

Size

80mm

Gender

Unisex

Condition

Good

Color

Black

Product Information

Product Condition: The OS-99 Stem is in Good condition. Stem is in good condition. Was previously owned for approximately 1 month. Stem has been installed and has markings from install. Shows little to no other signs of use. Sold as-is. All warranties void.

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

Backcountry

Avg. Ship Time

20 hours