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As per title! Cant see where i can get the front to fit as forks only have a hole under the steerer? Even the plug and play seem to need a fixing at the crown?
35mm tyres
I have the Specialized Dry-Tech. The front one has to be drilled to fit the front fork. I think the plug and play are the same. I'm not sure about the 2015 Diverge but my 2019 needs a rear bracket which fits the seat tube (Part number - S182200014). I got one direct from Specialized for free (apparently they are supposed to be supplied with the bike but often get chucked out because they get mistaken for spare reflector brackets).
SKS speedrocker are good if you want decent coverage, easy fitment and space for bigger tyres.
In the past for my Arkose (also with only a steerer hole and nothing in the crown) I drilled out the crown bracket rivet and bolted the guard through the hole that was left behind.