Looks extortionately expensive for an impellor.
If it's running ok and it's only the pitting that seems to be the problem, could you try coating it with some sort of resin or sealer, something similar to the type recommended for the petrol tank repair in the recent thread? Just a thought.
Crazy prices for replacement bits for our bikes. Would be interesting to see how much it would cost to build a complete monster (any model) from replacement bits. I'd imagine it'd be into many tens of thousands of £s.
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