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Item # FSA000H

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Item # FSA000H


We keep seeing more and more of the peloton reverting back to the tried and true reliability of aluminum stems, and the FSA SL-K Carbon Stem makes a good argument for why. Pairing the latest in alloy forging technology with lightweight carbon fiber, the SL-K Carbon improves on the past without abandoning the future. With a foot on each side of the line, FSA provides a stiff support for the handlebars at a weight that's in line with carbon and titanium.

FSA's SL-K Carbon Stem is constructed from a mix of CNC machined 2014 aluminum and a carbon fiber composite. To guarantee rigidity, FSA 3D forged the aluminum stem body. This process starts with one ingot of aluminum that gets bored out and shaped internally; ultimately improving the aluminum's grain structure, eliminating the use of welds, and drastically reducing weight. The benefits to you are a heightened stiffness, with weight comparable to carbon fiber, at a considerably lower cost. To maintain the flow of weight savings, the SL-K uses a carbon fiber face plate with chromoly hardware.

The SL-K Carbon features a 40mm fork-clamp stack height with a 6 degree rise. FSA has included clamp-to-clamp model graphics that run inverse of each other to keep the aesthetic unchanged whether you slam the stem or run positive rise. It is only compatible with 1-1/8in steerer tubes and 31.8mm clamp diameter handlebars.

The FSA SL-K Carbon Stem is available in five sizes, from 90mm to 130mm, and in the colors Black and Black/white.

  • Carbon fiber composite and CNC machined 2014 aluminum
  • 3D forged aluminum body
  • Carbon fiber faceplate with chromoly hardware
  • 40mm fork-clamp stack height with a six-degree rise
  • Compatible with 1-1/8in steerer tubes and 31.8mm clamp diameter handlebars

Tech Specs

[body] 2014 aluminum, [face plate] carbon fiber, [bolts] steel
6 deg
Steer Tube Diameter:
1-1/8 in
Claimed Weight:
[100mm] 141 g
Recommended Use:
Manufacturer Warranty:
2 years

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Average at best

  • Familiarity: I've put it through the wringer

First, the SL-K Carbon stem is mostly aluminum-just the face plate is carbon. It does it's job and seems stiff enough but I think there are a lot of choices in this price range. And note the rust in the bolts-the only thing rusted or corroded on my bike-cheap materials??

Average at best

My Ritchey stem bolts rusted out too. Get some stainless or Ti bolts to replace them.