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X4 Labs penis extender review 2019

X4 Labs penis extender review
  • Efficiency
  • Build quality
  • Support
  • Price

Review Summary

X4 Labs extender is the second best penis extender that I have reviewed. It’s the most feature packed device that I have seen but it lags a bit in the build quality, but nothing to worry about. If your are after a good penis extender with a good comfort system plus a huge number of bonus products, then this is the perfect extender for you!

By using X4labs extender 6 months you will be able to get:

  • Up to 10% thicker penis
  • Up to 1.5 inch (3.8 cm.) longer penis
  • Permanent results
  • Correct curved penis

X4 labs extreme ultimate edition

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User Review
4.19 (16 votes)

What Is the X4 Labs Extender?

x4 labs limited edition red
This is the x4 labs limited edition red


The X4 Labs Extender is a penis traction device that has been formulated by certified X4 medicals as a way to give their customers the solution they are looking for– an improvement in penis size. It is quite similar with another popular penis extender in the market, which is the SizeGenetics, mainly because it follows some of its notable features, such as giving the comfort men need while their penises are being stretched for several hours.

What makes this device different is the 3-in-1 hybrid support piece it has. This gives you the privilege of choosing the best setting that will meet your preferences and needs. So far, those who have tried this device have noted how truly remarkable it really was, especially the comfort strap it has. This strap protects the glans from slipping, and prevents the occurrence of blood loss to the penis head as well.

How Does the X4 Labs Extender Work?

how does x4 labs work?The X4 Labs Extender follows the principle of traction that has been utilized for decades and it promises one thing – to help guys improve their penis size. Though, aside from increasing the length, it also enhances the girth of the penis as well. Thanks to its unique stretching system.

The way how this device works is quite simple. First, you put the device onto your penis and make sure that it’s “tightened.” This will ensure that you’ll get the stretching you need from the head of your shaft, gently, but accurately pulling it away from the groin area.

Aside from the traction device, this product comes with complementary items and additional parts.

The traction device is subdivided into 2 main components, namely: the base ring, tension bars, and the front head piece. The head of the shaft goes through the hole of the device, going toward the front head piece.

Once the penis reaches this part, the rubber strap will slowly tighten, which is just behind the head of the organ as it slowly secures the device. Then, the elongation rods must be turned counter clockwise and this will cause the stretching action. The user will feel a slight pulling, but that’s it.

Accessories and Comfort Straps

x4 labs straps foamsWhat makes this traction device comfortable to wear even for several hours is the comfort straps it has. A lot of penis extenders usually have a front piece that’s made of plastic and that’s it. On the other hand, this device has a memory foam that is specifically made to rest in between the front head piece and the penis- that’s what makes it feel comfortable. In fact, after using the device for quite some time, it’ll feel like you’re not wearing anything at all.

DVDs and Instructional Manuals

The X4 Labs Extender also comes with a well-written instructional manual and a DVD that outlines the several ways on how you can wear the device. Aside from learning how to properly use the silicon support, you’ll also know the best ways to put on the strap as well as the personalized Loop Fastener.

As for the packaging, it has a sturdy, yet sophisticated leather box with a felt lining inside it. Additionally, it contains a number of extra pieces of equipment, such as the front head pieces, extra base ring, alcohol wipes, and many more.


  • Completely Pain Less – Although it appears like this device is going to hurt your sexual organ, it’s far beyond from that. It’s specifically designed to be comfortable and effective. To support that, the X4 Labs Extender contains several comfort straps and pads that are used together with the system.
  • Very Discreet – You can wear this device comfortably under your clothing. Even when you’re outside, nobody will even know that you’re wearing a penis extender. Basically, it tugs down the penis, and not outward. Don’t worry. When wearing this device, it wouldn’t look like you’re having a boner.
  • Can Be Used Even by Uncircumcised Men – Even the uncircumcised men can use this device. They just have to pull the skin surrounding the head, and place the device like how you normally do.
  • Possible Treatment for Curved Penis or Peyronie’s Disease – Aside from improving the penis length, the X4 Labs Extender can also be used to treat Peyronie’s disease. This is the unnatural bending of the penis, wherein the only solution back then, was through surgery.

Fortunately, traction devices, such as the X4 Labs Extender can be used to correct the curvature caused by this disease. The device breaks down the fibrous plaque buildup and it’s also packed with generous amounts of Vitamin E to boost the process.


The only drawback of using this device is that it doesn’t really have a non-slip grip. So, those who have tried it have experienced the head piece slipping off. Whenever this happens, the user must set the device in order to use it again. This isn’t convenient at all, especially if you’re out at work or in a public setting. Although it doesn’t happen all the time, it’s important to make the potential customers aware of this.

X4 Labs Extender Results

Based on clinical studies conducted by the manufacturers of this device, it’s possible for men to achieve as much as 40% gain within 6 months of use. In fact, these professionals have considered the use of the X4 Labs Extender as one of the best methods to improve penis size aside from surgery.
By using X4 Labs penis extender for  6 months you will be able to get:

  • Up to 25% thicker penis
  • Up to 1.8 inch (4.5cm.) longer penis
  • Permanent results
  • Correct curved penis

lifetimewarrantyFinal Verdict

This device is clinically proven to be effective and safe. Not just that, it has been used by a number of men all over the world. It’s quite similar to to the SizeGenetics extender minus the bonuses it has.

Nonetheless, the results you’re going to experience from using this device are still promising. Likewise, the company behind this penis extender also offers a 6-month money back guarantee. Thus, if you’re not happy with the results, you can always ask for a refund. Though, make sure to take note of how long you wore the device, because this can also affect the results that you’re going to experience after several months of use.

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Do you have any questions about X4 Labs extender? Feel free to ask them in the comments or at

Austin Hanson

After finishing a master degree in Urology at the European University in St. Petersburg, Austin cofounded in 2015. The purpose of the website is to help men with a wide variety of sexual problems with a language that everybody understand. Austin is a dedicated writer and loves to get his hands dirty with product reviews and the latest urology news. Outside of work his an outdoors person who loves fishing and running, you can follow Austin on Twitter or LinkedIn if you can keep up with him!

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