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FSA OS-99 CSI Stem

FSA OS-99 CSI Stem

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$189.99
31.8mm
Black
1-1/4-inch and 1-1/8-inch
Availability: Please select options
 

Product Details

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

 
  • Part Numbers close open

    Option Barcode Manufacturer's Part Number
    31.8mm / Black / 100mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062031 175-0317BKG
    31.8mm / Black / 110mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062048 175-0318BKG
    31.8mm / Black / 120mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062055 175-0319BKG
    31.8mm / Black / 130mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062345 175-0321BKG
    31.8mm / Black / 90mm / 6° / 1-1/4-inch and 1-1/8-inch 00400310062024 175-0316BKG
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Chain Reaction Bicycles is your local bicycle shop for the San Francisco Bay Area! Unlike some other shops, we are dedicated 100% to serving the needs of local cyclists; our offerings are exclusively available for in-store pickup. You will find us at 1451 El Camino Real, Redwood City CA, 94063. 650 366 7130. Our Los Altos location closed on September 24th, 2017; we have consolidated all operations within our Redwood City flagship store.  Our hours and directions may be found here. We look forward to taking care of all of your cycling needs, including service! Mike & Steve Jacoubowsky, Partners, Chain Reaction Bicycles. Serving you since 1980!