KS Rage-I Dropper Post - 2020 - Internal - Stealth - 31.6mm - 125mm - 392mm - None Needs Images It features wind tunnel-tested aerodynamics

It features wind tunnel-tested aerodynamics for minimal resistance

Sole Materials: The sole is made with a high-grip Michelin rubber bottom

Compatible with Shimano HG+ 12-speed chains

Other component compatibility: Compatible with all 10 speed systems

KS Rage-I Dropper Post - 2020 - Internal - Stealth - 31.6mm - 125mm - 392mm - None Needs Images It features wind tunnel-tested aerodynamicsTop tier performance at a never before seen price point from KS. The longevity, smoothness, and weight of the Rage, give posts 3x the price something to worry about. Who's this for: Riders wanting a truly excellent dropper at a more affordable price than ever. Clamp options: Only available in the two leading size standards, 30. 9mm and 31. 6mm diameter. Spring and system: The Rage uses an adjustable air spring, with an open bath hydraulic cartridge.