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FSA SL-K Seatpost (US) (08) | $70
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FSA SL-K carbon seat post.

BikeRadar verdict

4 out of 5 stars

"A reliable and easily-adjustable carbon seatpost worth considering"

By Gary Boulanger, US editor

The US$70 FSA SL-K carbon road seatpost does it all: easy setup, sound saddle railing clamping, and no slippage in the seat tube. It's also a good value among its carbon competition.

Tech

The post is built using a two-piece carbon fiber 3K weave tubular construction, then mated to a forged 6061 aluminum head. A chromoly one-bolt clamping mechanism makes adjusting the saddle easy, easpecially to dial in the proper reach to the bars with a little fore and aft play.

FSA's SL-K kit has impressed us tremendously, and the carbon seatpost continues the good vibe. At 225g for the 27.2mm (diameter) x 250mm (length), this post compares favorably with carbon offerings from Campagnolo (Chorus 195g/US$99), Easton (EC70 190g/US$119), and Ritchey (Pro Carbon 235g/US$95).

Verdict

After several hundred miles, the FSA SL-K carbon seatpost, has proven to be a reliable and easily-adjustable carbon seatpost worth considering. Heavier riders (those weighing more than 200lbs) should consider the 350mm length.

© BikeRadar 2008

User Reviews

Post your review

  • User review of FSA SL-K Seatpost (US) (08)

    DO NOT BUY THIS SEAT POST!

    I just snapped mine today and i weigh only 70kilos and was seated, riding over lumpy sections in Epping Forest.

    Im lucky to not have two butt holes and a trip to the damn hospital!

    I wasnt even pushing it hard when riding. Could NOT believe it.

    Ive got it on video from the cam i had mounted to the frame. You can NOT miss the huge CRACK when it happens. Im trying to upload it to youtube. Will keep you posted as im having dramas with the upload.

    VERY VERY unhappy with this product.

    Infact, i'd like FSA to supply the best and lightest alloy model they have at the 350mm length to replace my broken one.

    It doesnt even really look like carbon fibre. More a resin centre with carbon webbing on it. If that webbing wasnt there, the seat wouldve fallen off after breaking and the fractured end wouldve gone up MY end.

    Do not trust anything carbon

    For this reason im now also getting rid of my carbon fibre handlebars for fear of a similar outcome.

    Sure, carbon fibre is x-amount stronger than steel but...

    Simply put- carbon is NOT made to flex. Being a seatpost/handles bars, they ARE going to flex. Carbon will crack, then snap off.

    If this happens with handles bars, i'll pray for you, coz you'll need it

    0.3

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Specification

Name:
SL-K Seatpost (US) (08)
Built by:
FSA
Price:
$70.00
Colour:
Black
Description:
NanoPro and DATA saddle clamps are designed to give ultimate adjustability. NanoPro's splined teeth offer two-degree steps, and is reversible for one-degree increments. The DATA clamp incorporates a macro-spline system for big adjustments, and a two-bolt system for fine tuning saddle angle.
Diameter:
27.2 mm
Diameters Available:
27.2mm
Layback:
true
Length (mm):
250 mm
Lengths Available:
250mm
Material:
Carbon Fibre
Offset:
25 mm
Road/Performance Compatibility:
Distance, Race, Road
Saddle Rail Compatibility:
7mm
Seatpost Brand:
FSA
Seat Post Clamp Model:
Bolt Type
Seatpost Model:
SL-K Carbon
Seatpost/Seat Pin Finishes:
Clear Varnished
Seatpost/Seat Pin Type:
Road Bike, Single Clamp
Weight (g):
260 g

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