what happens when piston decided its had enough

Hey all!
Bike died on way to work this morning ! really weird no prior noises days before etc, orginally thought it was a fuel problem as it just died slowly then compression tested and it had feck all!



The cylinder has no damage what so ever no scoring or even marked! just the head is pepperpotted with dents and stuff, 10k km's aint bad i guess. Anywho i've got to split the whole engine due to bits falling in crankcase so will be nice revvy 70 on rebuild. Has anyone had/using the stage 6 crank bearings metal cage or teflon cage? will be going on a motorforce evo crank and stage6 street race