KS eTEN Air Pressure Cartridge 125mm Model=Beam Seatpost Rack O-rings and the flanged bushing

O-rings and the flanged bushing design blocks out dirt and mud

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Number of Compartments 3 Attachment Method Straps

KS eTEN Air Pressure Cartridge 125mm Model=Beam Seatpost Rack O-rings and the flanged bushingKS eTEN Air Pressure Cartridge 125mm. Cartridges fully replace the functional mechanism of KS dropper posts. Pick the model and length of drop for the post you need to service. These are also called "Oil Pressure Sticks" and "Air Pressure Sticks" In KS Service Documentation. Fully replace the functional mechanism of KS dropper posts May not work with OEM dropper posts