I don't think the Sputnik comes in 40H anymore, at least not in 700c.
Frustratingly the A719 rim still has a marking for a 40H option on the rim sticker, but Mavic have confirmed they've ceased production.
The only solution I found to recycle the 40h hubs was the Velocity Diad.
@Midi started
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I don't think the Sputnik comes in 40H anymore, at least not in 700c.
Frustratingly the A719 rim still has a marking for a 40H option on the rim sticker, but Mavic have confirmed they've ceased production.