Daniel Ricciardo tried the low-downforce version (inset) - similar to the one used by the team last year in Italy - with a small main plane cord and no gills on the endplate. Daniil Kvyat, meanwhile, tested a more Spa-specific set-up, with higher downforce and two horizontal plus one vertical gill on the endplate. The team opted to qualify and race the Kvyat version on both cars in order to be able to better manage tyre life during the race.
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Red Bull RB11 - rear wing updates
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