Originally posted by KilRuf
The .4 gears are metric 64pitch. They are very very close. But not exactly. You can run the stock spur with 64pitch pinions. But the car will be alittle noisey due to the "imperfect" gear mesh. I don't run the stock spur. I run a RW 104 64pitch spur. Very nice.. very smooth and quiet.
I was wondering what pinion number are you using with the 104 size spur? Is it for stock or mod?