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The fsa gossamer megaexotriple 10 speed 170mm 30 39 52 crankset w bb is sold out or discontinued. We found 1500 related products.
The 20-words-or-less summary is easy to do: The FSA OS-99 CSI stem is an FSA OS-99 stem wrapped in carbon fiber. But there are nuances to it that require elaboration: For starters, this is different than most other wrapped carbon fiber stems we've seen. It's much lighter than those stems. For the older wrapped stems, manufacturers were generally taking their heaviest stem, wrapping some cloth around it and clear coating the thing. But the carbon fiber wrap on the OS-99 CSI is actually doing something. It's structural. The CSI acronym stands for Carbon Structural Integration. It is designed to stiffen up a really light stem (it adds 20g in weight in comparison to the standard OS-99). A stiffer stem is a more durable stem. This isn't to suggest that the OS-99 is weak. It isn't, and maybe some people won't notice the difference between the two stems, but if you're a bigger rider, or want some more bling on the bike, this is a great way to do it. We suspect CSI is a technology FSA will use more and more of in the future. It's already being used in the aerospace industry. The basic idea seems to be going around the bike industry some. Shimano has an super-light clincher wheelset that bulks up an ultra-lean aluminum rim with carbon fiber. The FSA OS-99 CSI Stem is a forged and CNC'd aluminum stem wrapped in carbon for extra stiffness. The aluminum base is AL7050. A gloss carbon is wrapped on top of the aluminum. There is a four-bolt sculpted face clamp. The clamp is anodized black. The four faceplate bolts and two steerer pinch bolts are made from titanium. The stack height of the stem is 41mm. The stem angle is plus or minus (+/-) 6 degrees aka 84/96-degrees. The stem comes in 80-130mm lengths in 10mm increments. The finish comes in either Gloss 3K Weave or Gloss UD. Weight is 118g.
$65 Go to
Competitive Cyclist
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.
$85 Go to
Competitive Cyclist