RockShox Reverb AXS Dropper Seatpost - 34.9 mmRockShox Reverb AXS Dropper Seatpost 34. 9 mm The simple but ingenious purpose of the Reverb AXS: No cables! No threading through! Save power for what you need fun on the bike with immediate effect! That's why this reliable electric dropper post was developed with a wireless remote control that triggers particularly easily and without delay. The Reverb AXS uses the new SRAM AXS communication platform, which enables networking and individualization of