Fox Factory Transfer SL Factory Series Dropper Post - 31.6mm - Internal - Stealth - 75mm Drop - 355 mm Length - No Remote Supplied - 2024At up to 167 grams (roughly 25%) lighter than the Transfer post, the Transfer SL is the lightest mainstream dropper post on the market. The two position design means the dropper can be ridden as either fully extended or fully retracted with size travel options from 27. 2mm x 50mm up to 31. 6mm x 150mm. With lever options for both flat bars and drop bars, the Transfer SL brings simplicity and lightweight performance to Trail, XC and Gravel disciplines.