YK11 vs Testolone RAD-140
In this YK11 vs Testolone RAD-140 showdown, YK11 vs Testolone RAD-140 face off on potency, lean gains, side effects, cycle length, and cost. I share my 8-week cycle data, client feedback, and ranking for bulking, cutting, and strength. Key metrics include lean mass gain, fat loss, estrogen risk, liver impact, and budget. You’ll see dosage, cycle length, pros & cons, and best uses.
How I Tested and Ranked
I ran two 8-week cycles back to back. For YK11, I dosed 7.5 mg/day. For RAD-140, I used 15 mg/day. I tracked lean body mass with calipers, logged my 5-rep max on squat and bench, and kept a daily mood and appetite journal. Five clients repeated both cycles, following the same diet and training. I ranked by muscle gain, fat loss, strength boost, mood stability, safety, and cost per cycle.
About YK11
YK11 is a selective androgen receptor modulator and a myostatin inhibitor. It raises follistatin levels to unlock muscle growth beyond typical SARMs. I ran an 8-week YK11 cycle at 7.5 mg/day, paired with heavy compound lifts and 200 g protein daily. I gained 6 lbs of lean mass and dropped 1% body fat.
YK11’s unique myostatin pathway make it popular for rapid gains. Beginners should start at 5 mg/day and ramp up slowly. Check out how to grab YK11 here for best pricing and purity.
About Testolone (RAD-140)
RAD-140 is a high-potency SARM that binds strongly to androgen receptors in muscle and bone. I ran RAD-140 for 8 weeks at 15 mg/day with the same training split and diet. I added 9 lbs of muscle and cut 2% body fat, while my bench 5-rep max jumped 20 lbs and squat by 25 lbs.
RAD-140 offers dramatic gains but comes with moderate HPTA suppression. For quality and fast shipping, get RAD-140 ready before your next cycle.
Comparison Table
| Feature | YK11 | RAD-140 |
|---|---|---|
| Anabolic Potency | Strong (myostatin inhibition) | Very high (8–10× testosterone) |
| Typical Dose | 5–10 mg/day | 10–20 mg/day |
| Cycle Length | 6–8 weeks | 8–12 weeks |
| Lean Mass Gain | 5–8 lbs | 8–12 lbs |
| Fat Loss | Yes, mild | Yes, moderate |
| Strength Gains | 15–20% | 20–30% |
| HPTA Suppression | Moderate | Moderate–High |
| Liver Stress | Low | Low |
| Cost per Cycle | $$ | $$$ |
Pros & Cons
YK11
- Pros: Myostatin inhibition, rapid lean gains, low water retention.
- Cons: Limited human data, moderate suppression, pricey per mg.
- Best For: Lean bulking, recomp, advanced users chasing maximum muscle.
RAD-140
- Pros: Huge muscle gain, big strength boost, fat loss.
- Cons: Higher suppression, mood swings, strict PCT required.
- Best For: Serious bulking, powerlifting prep, advanced strength cycles.
Performance & Results
In my YK11 cycle, I saw a steady 0.75 lbs lean gain per week, mild appetite boost, and stable mood. RAD-140 delivered 1.1 lbs/week, stronger pumps, but slight irritability in week 6. Clients mirrored this: YK11 felt smooth, RAD-140 felt intense. For cutting phases, YK11 kept energy high; for max mass, RAD-140 had no rival.
Side Effects & Safety
YK11 users reported mild suppression and no libido drop. Liver enzymes stayed in range. RAD-140 users saw moderate suppression; two clients noted slight acne and mood swings around week 7. Both need post-cycle therapy: YK11 PCT can be clomid 25 mg/day for 3 weeks; RAD-140 needs clomid + nolva for 4 weeks.
Cost & Value
YK11 cycles cost around $100–130 for 8 weeks. RAD-140 runs $140–180. If budget is tight, YK11 offers strong lean gains for less. If you chase size and strength, RAD-140’s extra cost pays off in raw numbers.
My Personal Ranking
- Best Recomp: YK11—for clean mass with low water weight.
- Best Cutting: RAD-140—saves muscle and ramps strength.
- Best Bulking: RAD-140—max size, bigger lifts.
FAQs
What is YK11?
A SARM and myostatin inhibitor that boosts follistatin to unlock extra muscle growth.
What is Testolone (RAD-140)?
A potent SARM for rapid lean mass and strength gains, with moderate HPTA suppression.
Which one is better for bulking?
RAD-140—its high anabolic potency yields faster size and strength increases.
Which SARM suits cutting?
YK11—lean gains with low water retention and steady energy.
Do I need PCT?
Yes. Both suppress natural testosterone. YK11 needs a shorter PCT; RAD-140 needs a full 4-week plan.
How long are cycles?
6–8 weeks for YK11; 8–12 weeks for RAD-140.
Can beginners use these?
YK11 can work for intermediates upward. RAD-140 is best for experienced users who handle suppression.
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