KS Rage-I Dropper Post - 2020 - Internal - Stealth - 31.6mm - 100mm - 342mm - None Dropship They use a captive steel

They use a captive steel washer under the head which reduces friction on the dropout face

Requires the DART tool (see link below) and Stans or another latex-based sealant to activate properly

The JetBlack Z1 PRO Fluid is a high quality

Don't perform as well in in wet conditions

KS Rage-I Dropper Post - 2020 - Internal - Stealth - 31.6mm - 100mm - 342mm - None Dropship They use a captive steelTop 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.