I have no clue, guys. Maybe someone here can help. Crazy backwards numbers.

 

What bike and engine is it fitted to? How many gears?

 

It's a 5 speed. I found an older thread with the exact same trans and backwards numbers, no luck on identifying it though.

 

Sputhe used SN's similar to that, although I could not identify the number on that trans. If I remember correctly, the Sputhe trans with the "R" indicated it had a reverse gear as well. You could send the identification number and a picture to sputhe@hotmail.com to see if they can better identity it for you.

Generally, they built a good trans that held up fairly well.

Paul