KS

Hydraulic Cartridge, i900, i950 - 125mm 

The KS Hydraulic Cartridge brings new life to a trusted dropper post, restoring smooth, reliable performance when your post starts to sink or lose travel consistency. Designed as a direct replacement for KS i900 (Dropzone), i950 (Supernatural), and i7 (Supernatural 27.2) models, this cartridge helps experienced riders and daily trail users keep their posts running like new—without replacing the entire unit.

• Restores full dropper performance – Fixes sinking or rotating issues for a like-new feel.
• Precision hydraulic design – Smooth, consistent actuation every time you hit the lever.
• Compatible with multiple KS models – Fits i900, i950, and i7 posts for easy maintenance.
• Cost-effective repair – Extend the life of your seatpost without a full replacement.

For riders who demand reliable function from their dropper post, the KS Hydraulic Cartridge is an essential small part that keeps every ride dialed and every descent confident.