The dropper post length is dependent on a couple of factors; the first being your saddle height and the second being the maximum seatpost insertion depth which you’ll find listed below. Using the values below and the charts supplied by the dropper post-manufacturer you will be able to figure out which dropper post length is best for you.

2018-2020 Instinct carbon:

Size S = 230mm

Size M = 245mm

Size L = 280mm

Size XL = 280mm

 

2018-2020 Instinct Alloy:

Size S = 200mm

Size M = 230mm

Size L = 280mm

Size XL = 280mm