Im sure it could be welded then ground back, maybe the hole rebored.Zero
It's broken due to stress
A new weld will be weaker, and there's not much space to build up.
Don't listen, they are really nice bikes. The only real challenge is the proprietary shock sizing and alternatives should you need one.Before doing anything I’d check the rest of the main frame too as it could also be cracked.
I wouldn’t bother trying to weld and heat treat the rest triangle when a rear end would cost very little or even a full bike.
I had a RTS3 in 1995 lovingly named “Really Toss Suspension” as for the tiny amount of travel it wasn’t worth the constant bushing
Replacement and rear ends