RockShox Reverb Stealth 100mm The completely re-designed Reverb Stealth offers new travel options and an overall shorter post length allowing more riders to benefit from longer travel options. New Vent Valve Technology is simple and reliable. It provides an easy on-the-bike solution to the \\\"squish\\\" of the past. New shorter overall post length allows fit of a longer travel dropper on more bikes. New internals decrease the amount of drop force needed by over 50%. New grease and a new Internal Floating Piston (IFP), reduce friction, resulting in faster actuation and return speed in all conditions. Key FeaturesThe ALL-new Reverb Stealth is here. Minimal length for maximum drop. New shorter overall post length allows fit of a longer travel dropper on more bikes. What goes up fast, comes down even faster. New internals decrease the amount of drop force needed by over 50%.New grease, a new Internal Floating Piston (IFP), and our friends Maxima Fluid all come along for the ride, reduce friction, and result in faster actuation and return speed in all conditions. New Vent Valve technology, a simple and reliable built-in service solution without disassembly of the seatpost. About Rock Shox Founded in 1989, RockShox was one of the first producers of bicycle suspension forks and now produce the best suspension available, ridden by the world\\\'s best riders. Offering market-leading damping technologies such as Mission Control and Motion Control, on-the-fly\\\" U Turn and 2-Step instant travel adjustment systems, and numerous BlackBox\\\" technologies developed directly from the race circuit, RockShox continues to lead the way in all things suspension. In 2002, RockShox was acquired by industry leader SRAM. Seatpost Buying Guide