2x or 1x Race Face SIXC carbon fiber crankset, 175mm arm length, 24mm shimano spindle, used on a BB86/BB92 bottom bracket, or 73mm shell. Chainrings are 26T NW (oval) and 38T RF NW large ring. These are not cheap, I use them for a 2X 600% gear range. The 64-104bcd crankset without rings is 550g. I have used 3 or 4 sets of these through the years, extremely durable for carbon, I have never broken one (and I break everything).
Pedals not included, but available.
USED, $99 crankarms only, no chain rings. Or $179 with single or double chainrings and bashguard of your choice. Total cost of this configuration was just under $450.
NEW, $199 crankarms only. Or $299 with NEW single or double chainrings and bashguard of your choice.
You can use your own 104bcd chainring, as small as 30T, or if you want these chain rings, they are $20 and $29 ea, a bargain for RF 7075 hardened aluminum. 24t 26t 28t (small) as well as 36t and 38t (big).