I sold my triple and I just had this 2-5 nuetral down overide trans done by Jeff at Metal Tech 2 months ago. He cut a new drum and went through the entire trans. This trans is fresh and has not even been run. It was a back up for my triple. Only $325 shipped. No core needed. I am losing money on this. It comes as pictured with bearings, sprocket, seal, idler gear with a good bushing. This is a drop in and go setup. No surprises.