Dropper posts are almost a necessity when it comes to mountain bike riding. You'll be hard-pressed to find a new mountain bike without one. When they first came out, they were pretty pricey, but now they are becoming more budget-friendly. The Race Face Aeffect R Dropper Post is budget-friendly and a rock-solid option for riders wanting a simple, trouble-free dropper post. It has a sealed damping system and is made of 7075 aluminum that is lightweight and durable. It is cable-actuated and has a hydraulic cartridge with infinite adjust within the travel. The cartridge system is extremely reliable and easily serviceable.