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FSA SL-K Carbon Seatpost 20 Degree Setback
FSA SL-K Carbon Seatpost Zero Degree Setback
20 Degree Setback
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FSA SL-K Carbon Seatpost 1
FSA SL-K Carbon Seatpost 2

FSA SL-K Carbon Seatpost

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Light, Stiff, Vibration-Resistant; What More Could You Want?

The FSA SL-K Carbon seatpost is lighter and stiffer than ever – just 221 grams for the 27.2 x 350mm length.

Using a UD carbon shaft with a bonded alloy head and a sophisticated SBS clamp design, this is the finest SL-K seat post yet. Available with a polymer Di2 battery holder.


  • UD Carbon shaft with bonded alloy head
  • Forged alloy Top Clamp
  • Fit 7mm standard rails and 7X9mm oval rails
  • Chromoly Hardware
  • UD carbon finish
  • Black graphics
  • Length: 350; 400mm
  • Setback: 20mm; 0mm
  • Weight: 221g (27.2 x 350mm)

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


27.2 x 350mm - 0 degree setback

Seatpost Clamp: 27.2 

Seatpost Type: Rigid 

Setback: 0 degrees

Mfg PartNum: 192-0059001030 

31.6 x 350mm - 0 degree setback

Mfg PartNum: 192-0059005030 

Seatpost Clamp: 31.6 

Seatpost Type: Rigid 

Setback: 0 degrees

27.2 x 350mm - 20 degree setback

Seatpost Clamp: 27.2 

Seatpost Type: Rigid 

Setback: 20 mm

Mfg PartNum: 192-0058001030 

31.6 x 350mm - 20 degree setback

Mfg PartNum: 192-0058005030 

Seatpost Clamp: 31.6 mm

Seatpost Type: Rigid 

Setback: 20 mm


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Might be carbon but....
by Tim
Central PA.
1 of 2 customers found this review helpful.

While the post is carbon, the rather large set-back bolt clamping plate area is very heavy and cheap. Also its annoying that there are no degree angle lines, you will need your own level for that. I cannot speak for the vibration dampening properties as this is on a new ongoing bike build. I would spend more money and buy another if I had it to do over again.

Reviewed 2/22/2024
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