Learn more about PvP changes in Patch 9.1.5 in our Patch 9.1.5 PvP Changes Preview. Under the new system, you'd need to reach 1950 instead.
The only down-side of this new approach is that, currently, you finish the Elite transmog set by reaching 1800 rating. Below you can see how the current rewards are spread. This updated list of breakpoints are aligned with the other PvP changes coming with 9.1.5, which increase the granularity of rewards and upgrades. While we can't have confirmation until the patch goes live, the distribution is looking like this in the game data: While looking at data from Patch 9.1.5, we've observed that, together with the changes to PvP titles and gearing, the breakpoints for obtaining the Elite PvP transmog pieces is changing with the new patch.