• Well... I haven't done this on a DA hub, but if the solid axle is the same diameter as the old hollow one you shouldn't really need anything more than some cone spanners. But I don't know if that'll be the case or not. The other thing is getting hold of a solid axle and nuts that match your hub for quality - I imagine Shimano ones are a fair bit of cash - I don't know if they're anything special or not though.

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