While it's true that dropper posts rule the trail scene, they aren't for everyone. The Tharsis seatpost is ultralight and strong, so much so that you'll question the need for that extra 2 lbs associated with your dropper post. Made of T800 monocoque carbon fiber, the Tharsis seatpost also has reinforced
Strengths: Light weight, sleek looks, T-800 Carbon construction, 10mm offset, Best seatpost I ever owned for the first five or so months.
Weaknesses: Clamping system fails to hold seat after 6 months riding, 13nm torque settings on a single bolt are useless because after 5 mins riding the bolt loosens itself off to around 7nm which is not tight enough to hold the seat in place. Worst of all is Pro / Shimano customer service. They don't want to know you.
This will be the first and last PRO product I ever buy. It was good while it lasted but the clamp started to fail after 6 months and it's too dangerous to use now. Relying on 13nm of torque on a single bolt to hold the seat in place just isn't enough. The slightest bit of wear and the clamping system is a complete fail. I sent this pile of junk back to Shimano / Pro and they said it was working fine. Apparently a seat that points to the sky after five mins isn't a safety issue for the people at PRO Bottom line. Avoid this junk like the plague and get a Thomson. Shimano warranty is a JOKE!!!
Strengths: Beautiful post. Very clean carbon. Made in Japan. Includes both clamps for round or oval seat rails.
Weaknesses: 13nm torque to tighten the seat clamp. That gives me the willies.
I'm very happy with this post as an alternative to the EDGE/ENVE option. I had no problem finding a 30.9 which is a near impossibility in the E/E line. Looks good. Just the right amount of dampning. And the best thing? A 10mm setback. Just perfect for my fit.