Meet the Transfer SL Performance Elite Dropper Seatpost . At 128 grams (25%!) lighter than the regular Transfer post, it&';s the lightest mainstream dropper post on the market. Compatible lever options for flat bars, drop bars, and 1x and 2x drivetrains, it (finally) brings the word "shred" into the super lightweight XC and Gravel conversation scene. Performance Elite Transfer Posts retain the same internals, diameter options, drop options, shortened stack heights, new patent-pending head design and proven internals as the Factory Series but have a black anodized upper. 2-position mechanical post that locks at the top and bottom only