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FSA OS-99 CSI Stem

FSA OS-99 CSI Stem
$164.99
Clamp Diameter:
31.8mm
Color:
Black
Length:
130mm
Rise:
Steerer Diameter:
1-1/4-inch and 1-1/8-inch
Please select options
Shoot! This product is not currently in stock at our store. However, we really appreciate you shopping local and we would be happy to special order it for you. We may also have something comparable in stock. To check on availability or a substitute please give us a call at 907-780-2253.

Details

FSA's K-Force OS-99 CSI is 3-D forged and CNC machined from AL2014 before a uni-directional (UD) carbon weave skin is applied through the Carbon Structural Integration (CSI) process. To further reduce weight the OS-99 uses a 4-bolt sculpted AL2014 alloy/carbon faceplate and titanium hardware. CSI is a process that permanently bonds carbon to alloy, to create a true hybrid product, with many of the benefits of aluminum and carbon.

- Stack Height: 41mm
- Weight: 126g (100mm)

Stem angle and length measurement

Stem angle is one of the factors that determines handlebar height. A listed angle of 0 degrees actually provides a rise that is dependent on your bike’s head angle (see image).

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 135mm, it actually extends 108mm parallel to the ground.

Part Numbers

Option UPC MPN Store SKU
31.8mm / Black / 130mm / 6° / 1-1/4-inch and 1-1/8-inch 400310062345 175-0321BKG FSA55352899N

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