What is the difference between an Arog HDI and Avenger?

[msta999]

I was looking at some used Argo's and was wondering what the difference is between these two. Anyone know?

[AK375HH]

Depends on the year. The hdi came out with the admiral transmission (a must) in 2015 and had upgraded axles (flanges were bigger). Other than that they were available with the same 31 hp efi engine. I’ve had a 2007 avenger, 2015 hdi and now a 2020 aurora. The idler chains on the classic transmissions suck. Also the gearing of the admiral and steering with the triple differential are way better.