The aluminum bowden adapter in the EZStruder does not fit in the Titan. Also, the Titan is designed so that the bowden tube goes all the way through the aluminum adapter, nearly all the way to the drive gear, instead of stopping in the adapter.So if you are planning on replacing your EZStruder, be sure to order E3D’s bowden adapter when you order your Titan. Or be prepared to do a lot of filing/drilling to make the EZStruder part work 😉 Note to self: do the research and measure before assuming parts will fit together. http://ift.tt/1sBBKHu