I've used HEL, you have a couple of options for the front (dual lines or Y-line) they are good guys and the hoses have worked well.

Another option is Venhill - others have used these.

There are numerous short lever solutions, form cheap Chinese type to ASV's. I opted for the ASV's, but the din't do a set specific to the Tenere, so it was a brake lever from one bike and a clutch from another that fit - they probably have this sorted by now though as many people have changed levers.

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Never underestimate the power of stupid people in large groups.