Bell Rae or Maxima in TTR 90 & TTR125

[stalefish]

What weight of Bell Rae or Maxima transmission oil should I use in the Yamaha TTR90 and TTR125. I am using 75w in the 2 stroke pw50 as per recomendation. I am unsure about the 4 stroke TTR's
Please help.

 

[Vic]

Read the owner's manual.

The TT-Rs have four stroke engines that require motor oil, NOT transmission oil.