YK-11 is a high-potency SARM (Selective Androgen Receptor Modulator) that also functions as a myostatin inhibitor—making it a standout in the field of performance enhancement. By mimicking dihydrotestosterone (DHT) and binding selectively to androgen receptors, YK-11 promotes lean muscle mass gains and strength increases beyond typical SARMs. Meanwhile, its unique ability to stimulate follistatin helps shut off myostatin, the protein that normally limits how much muscle can grow. The result: targeted users (bodybuilders, serious athletes) may push past genetic muscle-growth ceilings and accelerate their physique results.

Key Benefits:

• Enhanced muscle hypertrophy and lean mass development — thanks to androgen receptor activation.

• Myostatin inhibition and increased follistatin expression → unlocks greater muscle-growth potential.

• Strength gains and improved performance — users report heavier lifts, fuller muscle “hardness”, and better pump. 

• Leaner physique with less water retention — allowing for a more defined look rather than bloated bulk. 

• Potential bone-strengthening support via androgen receptor/bone signaling — ideal for heavy lifters and long-term structural health.