RSP Plummet Remote Adjustable Mountain Bike MTB Seatposts back in stock. Why use a remote Dropper MTB Seatpost? It enables you to get off the back of your bike or at the least at a lower centre of gravity to allow for drops, jumps or rough terrain. The RSP Plummet Remote adjustable seatpost allows for a more seamless and fluid ride rather than having to either stop to move your seat post up or down, or not take jumps or drops at full tilt. The RSP Plummet Seatpost is also great vale with and RRP of £126.99, our price £109.99. Available at The Dogs Wheels Bicycle Shop Plymouth.