Robinson Racing Extra Hard Steel .8 Mod Pinion Gear w/5mm Bore (13T)
[RRP8713]

Robinson Racing Extra Hard Steel .8 Mod Pinion Gear w/5mm Bore (13T)
Brian Rodenburg - Rating: 5 of 5 Stars! Tuesday, July 31, 2012
I dont know what this guy is talking about. I have had awesome luck with the 5mm bore pinions. They Never break or slip off. You never strip the grub screw cause it is 2 sizes bigger. All in all I have been running my truck real hard for about 4 months now and have never once had an issue.