FSA OS-99 CSI Road Stem (+/- 6-degrees)

FSA OS-99 CSI Road Stem (+/- 6-degrees)
$180.00
Clamp Diameter
31.8mm
Color
Black
Length
100mm
Rise
Steerer Diameter
1-1/8-inch
Please select options

Details

FSA's OS-99 CSI Road Stem achieves a lot for its svelte stature. Made with a skeleton of CNC'd aluminum and wrapped with 3K carbon, the CSI is super stiff, which tightens up your steering and handling. It's super light, too, helped by the carbon wrap, the sculpted 4-bolt faceplate and titanium hardware.

Stem angle is one of the factors that determines handlebar height. A listed angle of 0 degrees actually provides a rise of 16-20 degrees, depending on the bike's head-tube angle. Flexible, athletic riders prefer lower-rise stems, while recreational riders usually favor higher-rise stems.

Stem length is measured along the side of the stem from the center of the steerer to the center of the handlebar clamp (see diagram). Keep in mind that as a stem provides more rise, its effective length decreases. In the example above, if the +17-degree stem measures 135 mm, it actually extends 108 mm parallel to the ground.

Part Numbers

Option UPC MPN Store SKU
31.8mm / Black / 100mm / 6° / 1-1/8-inch 400310026019 175-0312 PAPAST0026003

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