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> Bicycling Catalog > Parts > Stems > FSA > OS-99 CSI Stem
FSA OS-99 CSI Stem

FSA

OS-99 CSI Stem

$189.99
31.8mm
Black
1-1/4-inch and 1-1/8-inch
Availability: Please select options
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FSA OS-99 CSI Stem

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)

Features and Information

 

REVIEW SNAPSHOT®

by PowerReviews
Option Barcode Manufacturer's Part Number Vendor Number
31.8mm / Black / 90mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062024 175-0316BKG QBP-SM8010
31.8mm / Black / 110mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062048 175-0318BKG QBP-SM8012
31.8mm / Black / 120mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062055 175-0319BKG QBP-SM8013
31.8mm / Black / 130mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062345 175-0321BKG QBP-SM8014

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