160mm cranks ISIS interface. Where from?

I’ve been Googling this for weeks and can’t find any 160mm long cranks with an ISIS drive interface. They are for the rear of an e-tandem with a Bosch motor. Easy to find short e-bike cranks but I need cranks with a spider for the timing chain ring.
Tandem rear cranksBosch by englishjohn95[/url], on Flickr

Crank Shortening

https://www.tartybikes.co.uk/cranks_pair/c514.html

ALLOY eCRANKS

https://www.bikester.co.uk/parts/e-bike-parts/e-bike-cranks-arms/

Thanks Paton but all the above seem to be E:bike cranks without the option for a chain ring. Tarty bikes link appears to be some sort of trials bike cranks with freewheel options and I can’t see any that take a chainring with lock ring……..A bit confusing TBH but the crank shortening option does look like a goer to me so I’ll probably investigate that one.