I've personally never seen a wrecked NSR engine casing from a crash

Between my son and me, we have 5 crashes, never done any harm to the engine.
Fairing, footpegs, levers, handlebar and one time after a highside: top of tank and top of upper tripple clamp!
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Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom