My buggy is currently set up with 2 spider gears in each differential. I can convert them to 4 spiders per differential. Whats the benefit?
Thanks!

Stronger and less likely to strip. They use to only put two in a Savage when they first came out and do to so many problems with stripping they went to 4.

Sounds like a RTR Kyosho, My truggy was the same, converted to 4 spiders all round and silicone diff oil and wow, what a difference in handling/smoothness (If thats a word)