FSA OS-99 CSI stem Ø31.8 mm carbon

60 mm, 31.80 mm
Ratings
Currently out of stock
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Product details

The OS-99 CSI stem is a high-quality component for mountain bikes that combines functionality with modern design. Made from 3D forged and CNC-machined aluminum 2014, this stem offers a robust and durable construction. The carbon coating, enabled by Carbon Structure Integration (CSI) technology, provides additional weight reduction and enhances stiffness. With a diameter of 31.8 mm for the handlebar clamp and a steerer tube diameter of 1 1/8 inches, this stem is versatile and ideal for various mountain biking applications. The stem features a 6° angle, allowing for optimal handlebar positioning and thus increasing riding comfort. Weighing only 139 g (at a length of 100 mm), it is a lightweight choice for demanding riders.

  • Carbon Structure Integration (CSI) for improved stiffness and weight reduction
  • 4-bolt clamp for secure handlebar attachment
  • ChroMoly hardware for increased strength
  • Versatile with a 6° angle for optimal handlebar positioning.

Key specifications

Colour
Red, White
Exact colour description
Red, White
Length
60 mm
Diameter
31.80 mm
Item number
6868984

General information

Manufacturer
FSA
Category
Stems
Release date
18.10.2017

Colour

Colour
Red, White
Exact colour description
Red, White

Stem properties

Bicycle type
Mountain bike

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Diameter
31.80 mm
Length
60 mm

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Stems» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • FSA
    Not enough data
  • 1.Humpert
    0 %
  • 1.M-Wave
    0 %
  • 3.Ritchey
    0.1 %
  • 4.BBB
    0.3 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • FSA
    Not enough data
  • BBB
    Not enough data
  • Humpert
    Not enough data
  • M-Wave
    Not enough data
  • PRO
    Not enough data

Unfortunately, we don't have enough data for this category yet.

Return rate

How often is a product of this brand in the «Stems» category returned?

Source: Digitec Galaxus
  • FSA
    Not enough data
  • 1.PRO
    3.6 %
  • 2.M-Wave
    3.9 %
  • 3.Humpert
    7.2 %
  • 4.BBB
    7.6 %
Source: Digitec Galaxus