KS E20i Oil Pressure Cartridge

This cartridge is specifically designed for KS dropper posts. It is not compatible with OEM versions of these posts, so you must verify your specific model and drop length against the manufacturer's service documentation before purchasing.

This is the core internal mechanism of your dropper post. Replacing it essentially gives your post a 'factory reset,' restoring the original smooth action and reliable performance if your current post has become sluggish or inconsistent.

Replacing a dropper cartridge requires basic mechanical knowledge and specific tools to disassemble the post. If you are comfortable performing routine suspension or hydraulic maintenance, it is a manageable task, but we recommend consulting the KS service manual for your specific model first.

No, this cartridge is designed for a specific 75mm travel length. You cannot use it to increase or decrease the travel of your existing post; it is strictly a replacement component for posts that already utilize this 75mm specification.

If your post is struggling to return to full height, feels 'mushy' or inconsistent, or has developed significant play that cannot be fixed with a simple cable tension adjustment, the internal oil pressure cartridge is likely worn out and needs replacement.