I am seeking advice to find a lightweight Crankset Upgrade of a Dahon.
After disassembling and weighing the Truvativ Elita it turned out to be approx 1kg (excluding chainring bolts).

Right arm: 305g
left arm: 215g
extracting screws x 2: 40g
Chainring and guard: 135g
Isis Drive BB: 306g

1. What are the current options for crankset x1+BB that yield the lowest possible weight?
I would really appreciate it if you can give an estimated weight for the suggestions. THM and lightning are out of budget!