Rear Disk spacers for Berg wide track

a little off topic but i see in this picture:



he is using what look like 70/80mm stub axle spacers, is this how the berg cup cars are set up?
obviously the triangulation must help more in this case as there is more 'leverage' on the trailing arm to twist it?


EDIT: It's ok, i found the search button and actually used it! The reason i was asking was more of a safety issue but have read the threads about spacers being used on a rallycross ibiza etc etc so it's all good!

 

The Berg Cup set ups vary, from spacers to low ET wheels.

I may move these posts to a more appropriate thread, but you'll see it get bumped.

 

Yes, currently in 10 and 20mm width, can go bigger if needed.
Look in entrepreneurs, under stub axle spacers