Snapped a several spokes today and was wondering if anyone knew what length spokes I need for rear drive side Hope Pro2 hub and Mavic XM719 rim? I have looked on one online calculator (260.9 mm) but would like a second opinion if possible before I buy the wrong length! Thanks. Trying to look on the bright side that it's just my bike that's mullered but wincing at the thought of replacing the XO rear mech, mech hanger, chain and quick release skewer that all lunched themselves in my rear wheel when landing a small jump!

260 sounds like the right ballpark.

Cheers, just bought 260 and they are perfect- same can't be said of the trueness and roundness of the wheel at the moment!