The second set of race wheels don't have any published weights but the first set do at 2.77kg front and 3.86kg rear.
BST Carbon race wheels for the SD are 1.9kg (front) and 2.65kg (rear).
The prices are competitive $2000 plus import which is likely to work out at about £1500 on your doorstep whereas the BST are £2705 delivered in the UK.
Perhaps the first person to buy a set could write us a report?