sorry i am a little confused?
Are you saying they work better with the nitro savage than a flux?
If you are talking about a savage flux race setup... It is most definitely a vital upgrade in order for a savage to have any sort of chance to keep up with truggys on a track.
It increases your steering throw in turns, so tighter turns can be negotiated.
The removal of the rear tie rods remove slop from the rear wheels.
The LCG created by the lower adjustable upper arms also helps with handling.
They work exactly the same way on a flux and a nitro... And they benefit both in exactly the same way...
Gd luck at the races!!! I dont think i have seen pics of your truck... could you post some?
IMO this is one of the finest race set up savages. It is freddys from HPISF...
Its fully carbon fibre
RSC Conversion
Lightest wheel/tire combo
very LCG with shorter Shock towers and truggy style suspension and LCG Handle