All the pinion gears you see are Losi pinion gears. I will supply part numbers for everyone once I track them down. I threw away the packaging, so I will have to source out the parts again to get the numbers. The good thing about this is that these all fit together with no machining or fiddling around. You remove the brass spreader, and insert all the gears and run the axle through the hole that is already there, Everything meshes and you get the lower gear ratio.

I had some old COX slot car spur gears, these might be hard to find. However , "Slot-it" is a modern slot car parts manufacturer, and I am pretty sure they could be a source for these spur gears.

Give me a couple of days to get all the part numbers and I will post them so everyone can go out and do this easy mod for themselves.