KS eTENi/E30iS Air Pressure Cartridge

If your dropper post is failing to return to full height, sagging under weight, or feels sluggish despite proper cable tension, the internal air pressure cartridge is likely worn out. Replacing this unit is the standard fix for restoring smooth, consistent travel.

No, this specific cartridge is designed exclusively for the KS eTENi and E30iS models. It is not a universal part, so please verify your specific post model before purchasing to ensure a proper fit.

Yes, if you are comfortable with basic bike maintenance and have the necessary tools to disassemble your seatpost. However, it requires opening the post, so ensure you have the correct service manual or a reliable guide for your specific KS model on hand.

Yes, this cartridge acts as the complete internal pressure stick for the eTENi and E30iS. It replaces the core functional component responsible for the post's extension and compression, effectively renewing the post's primary action.

Some dropper posts that come pre-installed on complete bikes (OEM versions) may have slight variations in internal design compared to aftermarket models. Always double-check your post's specific serial number or model designation to confirm this cartridge is the correct replacement.