Even more super light.
By using a single piece, forged head and shaft instead of bonding separate units, Zipp was able to make its Service Course SL Seatpost even more Super Light. The titanium bolts also contribute to weight loss, and the fact that they're easily reached from below means that you can simply adjust your saddle position once it's installed. The clamps themselves feature a low profile which provides more clearance and a wider range of fore/aft adjustment.
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Reviews & Community
Well-executed aluminum version
- Familiarity: I've put it through the wringer
The SL is pretty light, looks great, and has one of the best seat clamp designs. Cosmetically, the lower portion is matte finish which obscures any scratches from raising and lowering the post. The upper part has that lustrous but stealth finish that characterizes the SL line. The disadvantage of the post is it is still aluminum so it may be stiffer than carbon alternatives, and you may have to use special compound to avoid Al/Ti bonding if you use it with a titanium frame.