Yes, you can stack RAD-140 and YK-11 together. Unlike some conflicting supplements that cause problems or cancel each other out, RAD-140 and YK-11 support each other when they’re stacked together. Those that have tried this method have spoken about the insane short-term muscle growth they experienced when they stacked these two SARMs together.
This is considered an extreme combination, a stack made specifically to bulk. Expect to gain tons of muscle over a short period of time. You may put on as much as 4-5kg or even slightly more during a single cycle, which is obviously absurd compared to the kinds of gains that most body-builders are able to make on a regular basis.
If you’re looking to bulk fast or have truly ridiculous gains, RAD-140 and YK-11 stacked together is one of the best options.