Penimaster Pro Review (2026) – Good Extender or No?

Disclosure: This content does not constitute medical advice. Talk to a licensed clinician, ideally a urologist, before using any penile traction device, especially if you have Peyronie’s disease, penile pain, numbness, erectile dysfunction, recent surgery, open sores or lesions, or if you take blood thinners.

Wondering if the Penimaster Pro (www.penimaster.com) is worth your time and money? In this article, we’ll review this extender in detail to help you make an informed decision…

According to the company’s website, the long-term application of PeniMaster PRO may help stimulate tissue expansion within the penis, which is why it is marketed as a non-surgical option for men seeking gradual traction-based changes.⁴

While the public largely views penis enlargement as a fantasy, scientific principles suggest the topic is more nuanced than many people think. A foundational concept in regenerative medicine and tissue engineering is that mechanical stress can induce tissue adaptation through cellular activity.

This concept is reviewed in the article “Mechanical Stretch Induced Skin Regeneration: Molecular and Cellular Mechanism in Skin Soft Tissue Expansion”⁵ available at PubMed.

This article is not specifically about penis enlargement, but it does help explain the broader biological principle behind mechanical stretch and tissue adaptation. That principle is one reason traction therapy continues to be discussed in urology.

Abnormal curvature in the penis

Penis extenders were medically developed mainly to help address penile curvature, which may prevent afflicted individuals from having regular intercourse. Normally, an erection is not absolutely straight. But erectile angles of curvature greater than approximately 30^o, such as in some cases of Peyronie’s disease, can make penetration difficult and may cause discomfort. Severe curvatures may render penetration impossible.

Studies have suggested that the prevalence of Peyronie’s disease, a common cause of abnormal penile curvature, might be as high as 9% in the general population and higher in patients with diabetes or after radical prostatectomy¹. The prevalence of patients under 40 presenting with PD was reported at 1.5%².

PeniMaster PRO may assist in reducing penile curvature in certain men. Applying traction therapy early in Peyronie’s disease may help counteract progressive curvature, potentially reducing the need for more extensive tissue removal during corrective surgery and minimizing penile shortening³. Additionally, these devices may aid in post-surgery scar healing and help improve surgical outcomes in selected cases.

What is the PeniMaster PRO?

The PeniMaster PRO is a penile traction system that elongates the penis through traction and stretches it in a physiologically guided manner over an extended period. This device uses a vacuum traction system, like the Phallosan Forte, which many users report to be more comfortable for longer wear than traditional metal rod-based systems such as the ProExtender or Andropenis.

The PeniMaster PRO is used for corrective enlargement, straightening, or therapy of the penis before and after surgery.³

Urologists worldwide discuss traction devices to help some patients pursue goals such as:

• Penile elongation
• Possible increase in circumference
• Support for glans expansion in some protocols
• Straightening of curvatures
• Supportive use in certain therapeutic settings

Based on its comfort-focused design, PeniMaster PRO aims to make gentle elongation more tolerable over longer wear periods than many traditional strap-style devices.

Device Overview of PeniMaster PRO

The Penimaster allows for an anatomically adapting connection to the glans of the penis through a vacuum-based attachment system. Its design is intended to create a secure hold while minimizing excessive pressure on the glans.

The device package typically includes:

1. Pump ball
2. ProMaster chamber components
3. Starter set diagram and sluice rubber
4. Manual
5. PeniMaster PRO rod expander system
6. PeniMaster PRO belt expander system

How does it work?

PeniMaster PRO works by combining three physical holding forces:

1. Positive-locking fit

Positive-locking fit is a stable holding force that helps connect two bodies with minimal loss of force. For penile traction, this force helps hold the penis securely while minimizing pressure on the glans. A thin latex diaphragm covers the glans and adapts to its shape. The glans chamber is designed to reduce slippage, and adapter rings can be used to adjust the device for a more comfortable fit.

2. Adhesion

The diaphragm’s anatomically shaped surface creates adhesion with the glans, similar in principle to how a contact lens adheres to the eye. This helps create a secure connection without excessive pressure or friction.

3. Metered vacuum

The gentle vacuum in PeniMaster PRO is designed to fit the diaphragm around the glans and hold it in place without applying excessive direct pressure. This is intended to reduce slipping and improve comfort.

Research Work on the Penimaster & Other Penis Extenders

• University of Turin, Italy – 2011

Non-invasive methods of penile lengthening: fact or fiction?

Condition(s) Tested For: Treating men who are affected by ‘short penis syndrome’.

Outcome of the Study: Results achieved did not appear inferior to surgery in selected cases, suggesting traction devices may be a reasonable first-line option for some patients seeking penile lengthening procedures.¹¹

• Mayo Clinic, Rochester, Minnesota, USA – 2019

Outcomes of a Novel Penile Traction Device in Men with Peyronie’s Disease.

Condition(s) Tested For: Treating penile curvature.

Outcome of the Study: Significant and clinically meaningful improvements in penile curvature and length were reported in men with Peyronie’s disease.¹²

• University of Turin, Italy – 2008

Use of penile extender device in the treatment of penile curvature as a result of Peyronie’s disease. Results of a phase II prospective study.

Condition(s) Tested For: Treating penile curvature, also called Peyronie’s disease.

Outcome of the Study: The device provided only minimal improvements in penile curvature but a reasonable level of patient satisfaction, probably attributable to increased penile length.¹³

• University of Tehran, Iran – 2010

Effect of penile-extender devices in increasing penile size in men with a shortened penis: preliminary results.

Condition(s) Tested For: Increasing penile length and/or circumference.

Outcome of the Study: The findings supported the efficacy of the device in increasing penile length, while also suggesting the possibility of glans girth enhancement. More studies were recommended.¹⁴

• Rush University Medical Center, Chicago, IL, USA – 2008

Penile traction therapy for the treatment of Peyronie’s disease: a single-center pilot study.

Condition(s) Tested For: To evaluate prolonged external penile traction as a nonsurgical treatment for PD.

Outcome of the Study: Prolonged daily external penile traction therapy was described as a promising nonsurgical treatment approach for PD, though further study was warranted.¹⁵

Benefits of using PeniMaster PRO

Depending on the duration of application, users may notice some temporary effects and, in some cases, more durable changes over time:

1. Applied for at least 30 minutes:

• Temporary expansion in the flaccid penis and glans that may last for hours.

2. Applied several hours daily for at least 4 weeks:

• Temporary flaccid expansion lasting for hours
• Possible measurable flaccid enlargement
• Potential support for penile straightening goals

3. Applied several hours daily for several months:

• Possible penile elongation and straightening over time
• May help with mild to moderate curvatures in selected cases
• May help reduce penis shortening after certain surgeries involving the prostate or penis

Penimaster Usage Guidelines (IMPORTANT):

It’s critical that users follow the instructions while using the Penimaster to reduce injury risk. It’s also recommended to speak to your doctor or urologist before trying any penis stretcher. Here are the Penimaster Pro instructions:

• Apply lubricant sparingly to the penis head and inside the enclosed latex chamber.
• Firmly compress the spherical pumping device and secure it to the sealed rotary valve.
• Rotate the glans enclosure and pressure pump together, then compress the ball pump to its maximum.
• Release the pressure gradually, creating a subtle vacuum that securely holds your glans within the enclosure.
• Detach the ball pump and ensure the valve stays closed.
• Configure the rod extension system, starting with a length equal to your stretched non-erect penis size plus an additional 1.5 centimeters.
• Insert the extension rods and attach them to the slim portion of the coupling socket. Adjust traction using the spring balance. Shorter rods provide lighter traction, while longer rods provide stronger traction.

Experts Insights on Extenders

Many doctors and urologists have publicly discussed penile extenders and traction devices as a treatment option for penile curvature and, in some cases, modest length gains. Some of the better-known voices in this field have commented on the topic as follows:

• Dr. Matthew Ziegelmann, Urologist at Mayo Clinic

“Penile traction is the only treatment that has been clinically shown to increase penile length. It may also improve penile curvature and indentation. It is relatively inexpensive, has few side effects and can be done at home. This is much useful in Peyronie’s disease but also very helpful in increasing length.”⁶

• Dr. Stefan Buntrock, Urologist, Germany

“Duration of traction is important in considering. Initially 3 hours and then up to 6-8 hours. Need commitment to wearing the devices for a long duration. Penile girth has not shown a reduction in traction. Traction has been successfully used for thousands of years by humans for different body parts like earlobes, lips, necks, etc, so there’s reason to believe that it also works for the penis as well.”⁷

• Dr. Rena Malik, M.D. Maryland

“You can gain a small amount of length with penile traction therapy and that has been shown in the literature.”⁸

• Dr. Neil Baum, Urologist. New Orleans.

“The benefits from using a penis extender include an improvement in penile curvature, and you can also expect an increase in size and length of the penis.”⁹

• Dr. Robert Chan. Urologist, California

“The results of penile traction as a treatment for penile curvature are pretty good”¹⁰

When not to use?

A doctor, ideally a urologist, should be consulted before application in case of venous issues, weakness of the connective tissue within the penis, or other concerns involving the penis or urethra. To ensure the natural sensations of the body and detect pain during application, the device should not be operated in the following cases:

1. Under the influence of alcohol
2. Under the influence of narcotics
3. Under the influence of sedatives
4. Under the influence of sleeping pills or medication that lowers awareness of pain
5. In case of allergies to latex

Disclaimer: Important Information on using PeniMaster Pro

Before using PeniMaster Pro, consult with a healthcare professional to ensure it is suitable for you. Potential side effects include discomfort, bruising, redness, and temporary discoloration. Proper use is crucial to minimize risks.

Results vary among individuals, and consistent use over several months is usually necessary for potential gains. If adverse effects occur, stop using the device and consult your healthcare provider immediately.

References:

1. Mulhall JP, Creech SD, Boorjian SA, et al. Subjective and objective analysis of the prevalence of Peyronie’s disease in a population of men presenting for prostate cancer screening. J Urol 2004;171:2350-3. [Crossref] [PubMed]
2. Levine LA, Estrada CR, Storm DW, et al. Peyronie disease in younger men: characteristics and treatment results. J Androl 2003;24:27-32. [Crossref] [PubMed]
3. Moncada I, Krishnappa P, Romero J, Torremade J, Fraile A, Martinez-Salamanca JI, Porst H, Levine L. Penile traction therapy with the new device ‘Penimaster PRO’ is effective and safe in the stable phase of Peyronie’s disease: a controlled multicentre study. BJU Int. 2019 Apr;123(4):694-702. doi: 10.1111/bju.14602. Epub 2018 Nov 22. PMID: 30365247.
4. Laurence A. Levine, James Rybak, Traction Therapy for Men with Shortened Penis Prior to Penile Prosthesis Implantation: A Pilot Study, The Journal of Sexual Medicine, Volume 8, Issue 7, July 2011, Pages 2112–2117, https://doi.org/10.1111/j.1743-6109.2011.02285.x
5. Guo Y, Song Y, Xiong S, Wang T, Liu W, Yu Z, Ma X. Mechanical Stretch Induced Skin Regeneration: Molecular and Cellular Mechanism in Skin Soft Tissue Expansion. Int J Mol Sci. 2022 Aug 25;23(17):9622. doi: 10.3390/ijms23179622. PMID: 36077018; PMCID: PMC9455829.
6. https://youtu.be/Z6mOpyQYnII?si=U7s7o2tcrSrSBBEN
7. https://youtu.be/U9-Uh2Glkq0?si=z2Li8z1e1A6wPE-r
8. https://youtu.be/o6PF8ifRUt8?si=QbN8vztFJT6DAir2
9. https://m.youtube.com/watch?v=sKyW4KrJ2KQ
10. https://youtu.be/UbktyR6bQr0?si=03yaQXSHasTW_P77
11. https://pubmed.ncbi.nlm.nih.gov/20868389/
12. https://pubmed.ncbi.nlm.nih.gov/30916626/
13. https://pubmed.ncbi.nlm.nih.gov/19138361/
14. https://pubmed.ncbi.nlm.nih.gov/20102448/
15. https://pubmed.ncbi.nlm.nih.gov/18373527/