SENICX PR2 Road Bike Crank Crankset 165/172/175mm CNC 50-34/52-36/53-39T 30/46T Double Chainring DUB Crankset

The Senicx crankset are solid, and probably the cheapest way to get 165mm crank arms these days. Though as raisinberry777 suggests, you can pick the PR2 DUB model, which saves some weight.