Sidi Sale—Save 20% or More »

FSA SL-K Carbon ITC Seatpost SB20/-10

Sale $105.99 - $124.99

Item # FSA001I

Select options
  • Select options
  • Red Logo, 27.2mm, 350mm ($105.99)
  • Red Logo, 31.6mm, 350mm ($124.99)
  • Black Logo, 27.2mm, 350mm ($105.99)
  • Black Logo, 31.6mm, 350mm ($124.99)
  • 100% Guaranteed Returns
  • Free Shipping on orders over $50

Item # FSA001I

Find the perfect saddle position

FSA’s lightweight SL-K Carbon ITC Seatpost SB20/-10 sophisticated features allows you to find the perfect saddle position at a reasonable price. The SL-K post is made with unidirectional carbon fiber, which saves weight and absorbs vibration. FSA uses its new Independent Top Clamp that allows for quick and easy adjustments with a broad tilt range in two different offsets (-10mm or 20mm).

  • Unidirectional carbon fiber
  • Independent Top Clamp
  • Convenient, independent adjustment of the saddle’s angle and position
  • Toggle between two different offset: -10mm or 20mm

Tech Specs

[shaft] UD carbon, [head] bonded alloy
27.2 mm, 31.6 mm
350 mm
20/-10 mm
Actual Weight:
Red Logo, 27.2mm, 350mm: 239g; Black Logo, 27.2mm, 350mm: 250g
Manufacturer Warranty:
2 years
Recommended Use:
road cycling, mountain biking

Reviews & Community


Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?


Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel

Best seatpost I've ever used

  • Familiarity: I've put it through the wringer

This is an excellent, no nonsense seatpost. I ride Sella SMP’s. Due to their rail design they are devilish hard to keep from sliding backward over time on most seatposts. This seatpost, with 8.6nm clamping force ON EACH SIDE provides plenty of holding power. My SMP’s have remained as solid as a rock, even in hard racing conditions. Also, having never used a seatpost with a single bolt to hold the saddle angle I was skeptical; no need, that’s been rock solid too. Last but not least, I was also very pleasantly surprised to find that the ITC makes saddle adjustments extremely easy. Far easier and faster than any other post I’ve ever used. I highly recommend this seatpost.

Works for Me

  • Familiarity: I've used it several times

I chose this seat post for my Ridley build. There where no issues with installation or quality of the seat post, and it's been perfect so far on my three rides.

Works for Me
Avg. ride time: 11h 21m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Just what I needed...

  • Familiarity: I've used it once or twice and have initial impressions

I recently had my bike professionally fitted, and I went with a new saddle that ended up making for a sore bum. After a few weeks of trying to wear it in, I decided to go back to my original Selle Italia.

One problem... the seat wouldn't allow enough adjustment, so it was set back 15mm too far.

This seatpost has a 20 or -10 offset, so it solved my problem. It is pretty inexpensive for carbon, but it feels pretty good, and looks well made. Hey, as long as the saddle is on the post, I am happy.

Just what I needed...