Easton EA90 AX Dropper Seatpost - 27.2 x 370mm 70mm Travel Internal Routing BLKEaston EA90 AX Dropper Seatpost 27. 2 x 370mm 70mm Travel Internal Routing Black. Race pedigree technology comes to gravel the EA90 AX dropper post brings your gravity gravel up to the next level. Featuring bulletproof DOSS style mechanical internals with quiet operation thanks to spring guides 2 position execution and cable attachment from either direction for easy compatibility with all levers. Pair it with the Easton gravel dropper lever for a