YK-11 vs RAD 140

The main difference between YK-11 and RAD 140 is that while YK-11 inhibits myostatin protein in your body (that prevents muscle growth) while RAD 140 works by increasing testosterone in your body.

When considering bulking, it is but natural for you to compare two SARMs and two of the most powerful SARMs that you may like to compare are YK-11 and RAD 140.

So, let’s get into the comparison of YK-11 vs RAD 140 and see which of these two is better but before that let me highlight the fact that SARMs are getting increasingly popular within the bodybuilding circle these days since they represent a better alternative to steroids that are known to have potentially dangerous and even fatal side effects.

YK 11 vs RAD 140

Having said that, it would be wrong to assume that SARMs are devoid of any side effects. Even though not much has been established clinically, anecdotal evidence from actual users reveals that there could be some serious side effects and they are largely dose-dependent.

While combining YK 11  Myostatin and RAD 140 Testolone in a stack is one of the worst things when it comes to testosterone suppression, both of these could be used individually.

Let’s find out how each of these stands against each other…

YK 11 Vs RAD 140

The main difference between YK-11 and RAD 140 is that YK-11 works by inhibiting myostatin protein while RAD 140 acts by stimulating testosterone production in your body. Thus, while YK-11 tends to prevent catabolic activity, RAD 140 works to enhance muscle growth and fat burning through a testosterone boost.

Let’s begin comparing the two SARMs…

What are YK 11 and RAd 140?


YK-11 is an immensely powerful SARM when it comes to building muscle. What sets it apart from other muscle-building SARMs is that it also inhibits myostatin which is a protein that prevents muscle growth in your body. Thus, by doing so it helps you build muscle even faster.

It’s worth noting here that bodybuilders who are myostatin deficient tend to build muscle rather quickly and much faster than others who have normal myostatin levels in their bodies.

Sadly, there’s not much clinical evidence on either the effectiveness or side effects of this SARM since trials were abandoned midway. However, anecdotal evidence suggests and confirms that it is really effective for increasing muscle. 

Having highlighted the most important benefit of this SARM, I must mention here that it is heavily suppressive too and it is not uncommon to find bodybuilders who experience massive testosterone suppression after a YK 11 cycle.

We have no human or animal data from this SARM, as it has been abandoned in clinical trials. 

RAD 140

RAD 140 or Testolone is yet another SARM that is supposed to be great for both building muscle and enhancing strength. One of the most important benefits of RAD 140 is that it also helps speed up fat-burning in your body. It also happens to be one of the best SARMs for cutting.

Thus, RAD 140 is simply excellent for lean and dry muscle gains.

Even though RAD 140 is suppressive it is not as suppressive as YK-11. 

However, I must mention here that a lot more clinical study is required to study the real benefits as well as side effects of this SARM.

Whatever information is available right now is from actual users who tell their experiences after being on a RAD 140 cycle.

YK 11 vs RAD 140


Half-life refers to the time a particular SARM or steroid stays in your body to create the desired effects.

When it comes to YK 11 and RAD 140, RAD 140 seems to have a clear edge in terms of half-life.

  • Half-life of RAD 140 is 60 hours
  • Half-life of YK 11 is only 12 hours

As mentioned above, the half-life of YK 11 is only 12 hours. Thus, you need to have two daily doses of this SARM to get the maximum benefit of it.

Against this, RAD 140 has a long half-life of 60 hours which means that even if you miss a daily dose of this SARM, RAD 140 will still be in your blood to create the desired effects, even though by a little lesser amount.

Benefits Compared

Let’s now compare the benefits of both these SARMs

Muscle Growth

As far as muscle growth is concerned, no other SARM comes close to YK 11 because it works on two counts. It not only increases anabolic activity in your body but also inhibits myostatin from limiting muscle growth in your body.

Thus, it can be said without a doubt that YK 11 is more powerful than RAD 140 when it comes to gaining muscle mass.

Anecdotal evidence suggests that it is possible to gain as much as 15 pounds of muscle in just an 8-week cycle of YK-11. Now, compare this with RAD 140 that may help you gain a maximum of 10 pounds of muscle in an 8-week period. 

Furthermore, both these SARMs can be stacked with other steroids for faster bulking results. RAD 140 Stacks can be used for bulking, cutting, and body recomposition.


When it comes to comparing strength, YK 11 again takes the lead over RAD 140.

You are likely to feel stronger and more powerful when on a YK 11 cycle as compared to when on a RAD 140 cycle.

One of the most important benefits that must be highlighted here is that YK 11 does not make you feel overly aggressive as is the case with RAD 140. Neither does it make you feel irritable. In other words, you are less likely to experience mood swings with YK 11 as compared to Testolone.


As far as vascularity is concerned, both YK 11 and Testolone can help you get more vascular. However, it is RAD 140 that tends to be a better performer in this regard. In fact, enhanced vascularity is one of the most appealing RAD 140 results and this is something that makes it highly appealing to gym freaks.

Even though YK 11 is great for muscle gains, it stands no competition to Testolone when it comes to burning fat. By increasing fat-burning in your body, RAD 140 is likely to have an advantage as far as enhancing vascularity is concerned. I must mention here that Testolone is one of those SARMs that can be used for both bulking and cutting cycles. It is likely to be a great option for body recomposition too.


I genuinely feel that motivation is directly linked to your strength. The more strength you have, the more motivated are you going to be to lift heavier and harder, which in turn is going to make you feel more confident and manly about yourself.

This is why YK 11 tends to be a better motivator as compared to Testolone RAD 140. 

When on this SARM, you would be eager to hit the gym every day and it gives you a distinct feel of being invincible!

YK 11 vs RAD 140

Side Effects Compared

So far, so good!

Let’s compare some of the side effects of these SARMs –  YK 11 with those of RAD 140…

Testosterone Suppression

One of the major side effects associated with most anabolic steroids and some SARMs is the suppression of testosterone production in your body. 

It seems no different when it comes to YK11 which is quite suppressive. Though bodybuilders can somehow get away without a RAD 140 PCT since RAD 140 Suppression can be avoided in certain cases, it is simply not possible with YK 11. While on a YK 11 cycle, it is imperative that you have to plan a PCT well in advance. 

It is not even remotely possible to get your testosterone production back on track without PCT after a YK 11 cycle. You do need to put yourself on Nolvadex for at least 4 weeks to get your test levels rising back again.

Some of the initial indicators of testosterone being suppressed include lethargy or constant fatigue coupled with a drop in your sexual appetite or libido. These two are often followed by other side effects such as mood swings including depression and a drop in your motivation to train.

It’s simply too strong to recover from naturally, and even I had to do a four-week PCT regimen with Nolvadex while on it.


Aggression is another common side effect associated with the use of anabolic steroids as well as SARMs. That Oscar Pistorius killed his girlfriend in a fit of roid rage is well-known.

As far as aggression is concerned, RAD 140 seems to take a greater toll as compared to YK 11.

RAD 140 can make you feel irritable trying to fret over little things. I would not be surprised if you get angry about little things or trivial matters when on RAD 140.

As compared to this, YK 11 will give you better control over your anger. Even though you might still feel angry, it won’t be to the level of killing or hitting someone.

Liver Toxicity

Well, this one would go to YK 11.

Yep, it is definitely liver toxic while RAD 140 is supposed to be a safer bet as compared to the health of your liver is concerned.

Let me explain a bit here…

YK 11 bears the addition of a methylated group to it. What it means is that it has alcohol present in it and your liver finds it hard to break it down. Thus, you need liver support while on YK 11 cycle.

RAD 140 is comparatively mild in this aspect and does not elevate your AST or ALT levels. Having said that, there is a possibility of things going wrong at any time and thus it is important to move ahead with caution.

Joint Pain

Even though joint pain is not a highly common occurrence with SARMs usage, you might still find your joints hurting when on RAD 140.

On the other hand, YK 11 is going to strengthen your bones while increasing muscle mass. Thus, there’s no possibility of experiencing joint pain when on YK 11.

Legal YK 11 and RAD 140

Even though there are many benefits of both YK11 and RAD 140, it is better not to use them since they are illegal and can lead to some rather serious side effects too. Legal SARMs are a far better option since they are safe and free of side effects.

This is what brands such Brutal Force specialize in. They have a legal and safe range of SARMs that are made with 100% natural ingredients and can help you get amazing results without any need of PCT.

Radbulk from Brutal Force is the top-rated alternative for RAD 140 that not only boosts testosterone but also helps you gain massive muscles and strength. It has been getting awesome user reviews.

YKBulk from Brutal Force, on the other hand, is a perfect alternative to YK11. It is excellent for muscle growth and for enhancing endurance.

RADBULK from Brutal Force

Radbulk review

Radbulk from Brutal Force mimics RAD 140 without any of its negative side effects.

  • This is a supplement that is formulated with the help of natural ingredients that help boost testosterone production in your body.
  • Some of the ingredients in it include Acetyl L-Carnitine HCL, Choline Bitartrate, Wild Yam Root Powder, DMAE, Safflower oil powder, etc.
  • Radbulk can help boost muscle growth in your body which is one of its main benefits. 
  • It can help amplify your strength too so that you can lift more weight in the gym.
  • It can also help boost your metabolism so that your body is better able to burn fat.
  • Another benefit it that it may help speed up recovery so that you don’t have to wait long for training the same body part again.
  • Last, but not the least, it can also help enhance vascularity.

Click here to Buy RADBULK from its official site now!

Radbulk comes with some amazing offers and is a part of a couple of stacks too. You must keep in mind that stacks can help you get even faster results when it comes to gaining muscle or burning fat. 

Radbulk is priced at $59.99 for a month’s supply and you can avail of Buy 2 Get 1 Free offer. I must mention here that multi-buy deals from Brutal Force are backed with a 100-day money-back guarantee which is unlike what any other brand offers.

Check out my Complete RADBULK Review by clicking here.


YK Bulk from Brutal Force

YKBulk, on the other hand, is the perfect alternative to YK11. It is great for gain muscle and strength. As a matter of fact, it is one of the most powerful muscle gainer that can help you get jacked within a few months. 

Some of its main features are listed below:

  • Good Muscle Growth
  • Incredible Strength Gains
  • Better Cardio Performance
  • Faster Recovery
  • Reduces Muscle Fatigue
  • Excellent For Bulking
  • Great User Reviews
  • No Side Effects
  • Buy 2 Get 1 FREE
  • 100 Day Money-Back Guarantee

Buy NOW!


It’s high time that you consider legal and safe alternatives to both steroids and SARMs and this is why  Brutal Force has been getting a lot of love from gym freaks all around the world. Their supplements not only mimic SARMs and steroids but are also free of all kinds of negative or adverse side effects so that you can bulk up or cut down with them without bothering about negatives or even PCT. 

Both Radbulk and YKBULK mentioned above have been getting incredibly positive user reviews. Both of these come with a money-back guarantee for 100 days on multi-buy deals.

Give them a try. I am sure you would long to reorder before they are finished!

Hi, I am Nick Jenkins, the founder and Chief Editor of CimaB-Sa.com. I am a passionate bodybuilder with 15 years of experience. I have also worked as a gym instructor for 8 years now and have extensive experience in both bodybuilding and weight loss. When I am not in the gym I loves spending time with my lovely wife and kids aged 7 and 4.