Niva Resource: Low-ratio TC mods

Low-ratio TC mod.

The low-ratio gear in the transfer-case can be swapped for a lower ratio one for better low speed crawling ability. LadaSport in Germany sell a gear set for around 600 Euro, or the 3rd gear from a gearbox can be modified to fit (ie the "French" TC crawler mod).

Off the shelf

LadaSport in Germany offers the following options:
2,502/1,205 - 17 % reduction
2,712/1,205 - 27 % reduction
3,152/1,205 - 46 % reduction

LadaSport low-ratio TC set

LadaShop in Russia also offer sets, but their site no longer works in my browsers, so I can't tell you anything about it.

Do-it-yourself

French TC crawler mod
DIY instructions: page 1 (350K) :: page 2 (800K) (Nivaventure/Fabrice)

Swedish version
includes Youtube instructions, and may be selling kits soon (Ahma & Niva-Micke)

Twin TCs

Another option could be twin transfer-cases; though they'd hang so low this is probably only a realistic option for very lifted Nivas.

Also:

Low-ratio 1st gear Gearbox swap

Low-ratio Diff swaps