This product is either discontinued or we cannot get that from suppliers.
G.skill F4-4000C14D-16GTEG Trident Z R-elite 16g Kit, Capacity 16GB (2 x 8GB), 288-Pin DDR4 SDRAM, Speed DDR4 4000 (PC4 32000), CAS Latency 14, Timing 14-15-15-35, Voltage 1.55V, Non ECC, Unbuffered, Dual Channel Kit.
The Trident Z Royal Elite series is the upper echelon of DDR4 performance and design, featuring a meticulously sculpted crystalline pattern across the polished surface of the aluminum heatspreader, a patented.