Motorcycle Fork Cartridge Cylinder Seal Case Parts

An internal damping cartridge cylinder sits in the middle of the outer case tubes inside most oil filled motorbike front forks. The suspension fluid can either be shared with the rest of the fork leg, or can be separately sealed - read more in our Closed vs Open Chamber Forks technical article.

Inside each cartridge insert slides a rebound rod. Sealing oil between the two are rubber shaft seals & a backup ring. The bands are often held in place at the top & bottom of the cartridge pipes inside one of these machined alloy seal holder cases, with their own o-rings, bushes, washers & spring seats.

If your bike's stock fork cartridges aren't good enough from the factory, we also offer DIY drop in aftermarket performance with a set of fully compression & rebound adjustable fork cartridges.
Then you can use your new fork comp & reb adjusters to the fullest, fine tuning your damping setup for different terrains, by reading our motorbike suspension clickers guide.