NSLST

iTrader: (14)

the only one i can find is novak pinion for mongoose, but the problem is the largest pinion is 19t. I tried to drill RR MLST pinions, but it is very hard to perfectly enlarge the hole.

if you know where to find .5mod+1/8 shaft+20+T pinion, please share, thanks a million.

IIGQ4U

iTrader: (53)

I personally use standard 48 pitch Robinson Racing Pinions. The pitch isn't exactly identical, but it is close. I have had this combo since about January and my spur gear is just fine. I run a 18R on outdoor asphalt if that helps.