Lol....i run 140/1 in my Ossa 280 trials bike.But that's a bit different.Maxum, ipone, amsoil, whatever your local shop stocks.
60:1 wow. I used to run my CR 250 at 32:1.
I run 60:1 in my 250xc-w and 50:1 in my RM125. Amsoil interceptor. I'd run a bit richer if the bikes were being used for MX.
2004 KTM 250 SX
Owners manual says 1:40 or....... 1:60 when using high grade oil....