If you’re exploring penis enlargement devices, you’ve probably come across the PeniMaster PRO, a German-engineered extender that employs an advanced vacuum attachment system. Despite its popularity and innovative design, questions remain about its true effectiveness, comfort, and convenience—especially compared to leading extenders like the Phallosan Forte Plus, Quick Extender Pro or SizeGenetics. In this detailed PeniMaster PRO review, we’ll carefully analyze its pros and cons, real-world results, and overall value to help you decide if it’s genuinely worth your investment.

What Is PeniMaster PRO?

The PeniMaster PRO is a medical-grade penis extender, designed and manufactured in Germany. This device utilizes a unique vacuum-based attachment system to safely and comfortably stretch the penis tissues, aiming to increase length, correct penile curvature, and improve overall sexual health.

Unlike traditional extenders that use straps or nooses, the PeniMaster PRO employs a specialized vacuum chamber to securely hold the glans (penis head) in place. This advanced attachment mechanism reduces slippage, improves comfort for prolonged wear, and minimizes potential risks associated with conventional tightening methods.

Primarily marketed for individuals seeking penile enlargement, the PeniMaster PRO is also commonly recommended as part of a therapeutic approach for conditions such as Peyronie’s disease (penile curvature).

In this review, we’ll take a closer look at how the PeniMaster PRO works, its pros and cons, and whether its performance justifies its relatively premium price point.

Before investing in the PeniMaster PRO, it’s crucial to weigh both its advantages and drawbacks carefully. Here’s a concise breakdown of the main benefits and potential downsides to help you make a well-informed decision:

Pros & Cons of PeniMaster PRO

✅ Pros

  • + Innovative Vacuum Technology: Uses a comfortable vacuum-based attachment that securely holds the penis head without causing slippage or excessive pressure.
  • + Clinically Supported: Recommended by medical professionals for Peyronie’s disease treatment and general penile enlargement.
  • + Good Comfort for Extended Use: Designed with soft, medical-grade materials that allow longer wearing periods compared to traditional noose or strap extenders.
  • + High-Quality Construction: German-made, medical-grade components ensure durability and reliability over extended periods.
  • + Comprehensive Accessories Included:
    Comes with multiple accessories and customization options for personalized usage.
  • + 5-Year Manufacturer Warranty: The manufacturer, MSP Concept GmbH & Co. KG, offers a 5-year warranty covering defects in materials and workmanship. This warranty is valid worldwide.
  • + 1-Month Money-Back Guarantee: Customers can test the product for up to one month and, if unsatisfied, return it for a full refund, including shipping costs. The product must be returned complete with all parts.​
  • ❌ Cons
  • — Relatively Bulky Design: Less streamlined compared to top-rated devices like Quick Extender Pro or SizeGenetics, making discreet use more challenging.
  • — Complex Setup: Vacuum system requires initial learning and adjustment, making it slightly more complicated to assemble and use, particularly for beginners.
  • — Requires Patience: Noticeable results typically require consistent, long-term use (several months up to a year).
  • — FDA Approval: PeniMaster PRO is not FDA-approved. While it holds EN ISO 13485 certification, indicating compliance with European medical device quality standards, it lacks FDA clearance for sale in the United States.

How Does PeniMaster PRO Work?

The PeniMaster PRO functions as a medical traction device, applying controlled, consistent tension to the penis over extended periods. This process stimulates cellular division and tissue expansion, a phenomenon known as cytokinesis, which can lead to permanent penile lengthening and, in some cases, correction of curvature.

Unlike traditional extenders that rely on straps or nooses, the PeniMaster PRO uses a vacuum-based glans chamber to securely attach to the penis head without restricting blood flow or causing discomfort. This vacuum seal creates a more even distribution of pressure, reducing the risk of slippage and allowing users to wear the device for longer sessions.

Once attached, the device can be used in two primary configurations:

  • Rod-based extender setup – similar to traditional traction systems, using adjustable rods to apply linear tension.
  • Belt-based system – offering more discreet and flexible wearing positions by anchoring the device around the body.

Through daily use—ideally for 4 to 6 hours per day over several months—users may begin to see measurable gains in length and improvements in penile curvature, especially in cases related to Peyronie’s disease.

Key Features of PeniMaster PRO

The PeniMaster PRO stands out in the penis extender market thanks to its combination of medical-grade materials and advanced engineering. Here are the key features that define its performance and user experience:

1. Vacuum-Based Glans Chamber

A soft, flexible chamber uses negative pressure to securely hold the penis head without pain or pinching, ensuring maximum comfort and reduced risk of injury.

2. Dual Wearing Modes

Can be worn as a rod extender or a belt-based system, allowing for both traditional traction and discreet, flexible use under clothing.

3. Adjustable Traction Force

Users can gradually increase tension up to 1150 grams, customizing the pressure according to their experience level and growth goals.

4. Universal Fit System

Includes multiple adapter components and latex diaphragm sizes to accommodate different penile anatomies and glans shapes.

5. Medical-Grade Materials

Constructed from hypoallergenic, durable materials certified under EN ISO 13485, commonly used in clinical-grade medical devices.

6. Ergonomic & Customizable Design

Allows for tailored setups based on body shape, lifestyle, and traction preferences—ideal for long-term users aiming for incremental gains.

Results: What to Expect

While individual results may vary, most users begin to see noticeable improvements in penile length, curvature correction, and overall comfort after consistent use of the PeniMaster PRO. Here’s a general timeline of what you can expect:

Timeframe Expected Results
Week 1–2 Getting used to the vacuum system and setup process; no physical changes yet.
Week 3–4 Improved comfort with longer wear times; minor increases in flaccid stretch length.
Month 2–3 Early gains in erect length (up to 0.3–0.5 inches); increased penile elasticity.
Month 4–6 Continued length gains (up to 0.7–1 inch); noticeable reduction in penile curvature.
Month 7–12 Significant length improvement (1+ inch possible); stable and lasting results.
Beyond 12 months Maintenance phase; further gains possible with ongoing use and consistency.

Note: Results depend on daily usage (ideally 4–6 hours), body response, and adherence to setup guidelines.

PeniMaster PRO Setup: Step-by-Step Guide

Setting up the PeniMaster PRO correctly is crucial for achieving optimal results and ensuring user comfort. Follow this step-by-step guide to assemble and use the device effectively:

PeniMaster PRO Component Overview

1. Rod Expander System:
This is the traditional traction frame with adjustable metal rods and a base ring. It allows for precise tension control and is ideal for structured stretching routines.

2. Belt Expander System:
An elastic belt that wraps around the waist, shoulder, or knee to apply dynamic traction. It offers flexible wear positions and is more discreet under clothing.

3. Glans Chamber (Vacuum Attachment):
The core of the device, this vacuum-based chamber securely holds the penis head using a diaphragm and sluice system. It ensures comfort during extended wear without pressure points.

4. Weight Pulling System:
A gravity-based traction option using hanging weights. Best suited for advanced users or those treating Peyronie’s disease, it provides a natural, consistent stretch.

PeniMaster PRO Setup

1. Unpack and Inspect All Components

  • Ensure all parts are present: base ring, glans chamber, diaphragm, sluice, pump ball or hose, rods or belt, and comfort accessories​
  • Familiarize yourself with each component using the official assembly video​

2. Prepare the Glans Chamber

  • Insert the appropriate diaphragm size into the glans chamber
  • Attach the sluice over the diaphragm to secure it in place​

3. Attach the Vacuum Application System

  • Connect either the pump ball or hose to the glans chamber valve​
  • Ensure a snug fit to maintain vacuum integrity​

4. Position the Glans Chamber

  • Place the glans chamber over the penis head​
  • Use the pump or hose to create a vacuum, drawing the glans into the chamber comfortably

5. Assemble the Traction System

  • For Rod Expander:

    • Attach the rods to the base ring​

    • Connect the glans chamber to the rods, adjusting the length to apply gentle tension​

  • For Belt Expander:

    • Secure the belt to the base ring​

    • Wrap the belt around the waist, shoulder, or knee, depending on preference, and connect it to the glans chamber

6. Adjust Tension and Wear Time

  • Begin with light tension, gradually increasing as comfort allows​
  • Aim for daily wear sessions of 4–6 hours, as recommended​

7. Disassemble and Clean After Use

  • Carefully remove the device components
  • Clean all parts with mild soap and water, ensuring they are thoroughly dried before storage

For a comprehensive visual guide, refer to the official PeniMaster PRO tutorial videos.

Comfort & Safety

Comfort and safety are crucial when choosing a penis extender, especially for long-term use. The PeniMaster PRO scores well in this category thanks to its vacuum-based glans chamber, which eliminates the pressure points and skin pinching commonly found in strap- or noose-based systems.

✅ Comfort

The vacuum attachment distributes pressure evenly around the glans, significantly reducing discomfort during extended wear. Additionally, users can choose from multiple diaphragm sizes and latex thicknesses, allowing for a more customized and gentle fit. Once the setup is dialed in, many users report being able to wear the device for 4–6 hours per day with minimal irritation.

✅ Safety

PeniMaster PRO is manufactured using hypoallergenic, medical-grade materials and complies with EN ISO 13485 medical device standards. This minimizes the risk of skin reactions, allergic responses, or infections.

However, it’s important to note that improper usage—such as applying excessive tension too quickly or skipping cleaning steps—can still lead to issues like bruising, swelling, or decreased circulation. For best results:

  • Start slow, with light tension and shorter sessions.
  • Follow all cleaning and usage instructions from the manufacturer.
  • Consult a doctor if you have pre-existing conditions like Peyronie’s disease or poor circulation.

While the device is generally safe, it does require careful setup and consistent hygiene to avoid complications.

Customer Reviews & Feedback

Understanding real-world experiences is essential before committing to any penis extender. Here’s a breakdown of both expert analysis and actual user feedback for the PeniMaster PRO.

Expert Opinions & In-House Testing

Medical professionals often regard PeniMaster PRO as a reliable and clinically relevant device, particularly for treating Peyronie’s disease and post-operative penile rehabilitation. Its design complies with European medical device regulations, and the vacuum-based system is generally viewed as a safer, more comfortable option compared to traditional methods.

In-house testing conducted over a 12-month trial period showed:

  • Gradual gains in penile length (up to 1 inch in 9–12 months)
  • Improved curvature correction in men with Peyronie’s
  • Low incidence of skin irritation or slippage when used correctly
  • Slight learning curve in initial setup and adjustment

While the product is praised for quality and safety, most experts agree that it’s less discreet and more complex than newer systems like Quick Extender Pro.

Real User Reviews from Forums & Communities

To provide a comprehensive perspective, we’ve gathered feedback from various platforms, including Amazon, eBay, and reputable review sites. Here’s a selection of user experiences:​

⭐ 5-Star Reviews

“Excellent product! Very comfortable when used right!! Penimaster actually works to make your peni bigger! Lol Excellent seller, thank you so much!”
— eBay Buyer Review

“Bin Positiv überrascht. Der Penimaster lässt sich besser tragen als Phallosan Forte! Bei Phallosan Forte musste man immer wieder den Gurt nachziehen und Zugkraft zu erhalten. Oft hatte sich ebenfalls das Vakuum der Glocke gelöst. Das hatte mich extrem genervt letztes Jahr.”
— Amazon.de Customer Review

⭐ 3-Star Reviews

“The device works, but the setup takes too long. Not something I can use discreetly at work.”
— User Feedback​

“Too many small parts. Lost a diaphragm and had to reorder.”
— User Feedback​

⭐ 1-Star Reviews

“Nach der Lieferung habe ich festgestellt, dass ein Teil fehlte und ich es nicht bekam… Anwendung Glocke mitsamt der Zubehör einfach nur umständlich und es funktioniert kaum bis gar nicht! Egal wie gut man damit geübt ist und es richtig anwendet, der Unterdruck halt nur maximal 3 Stunden und danach ist das Tragen nicht mehr möglich bis man die ganze Prozedure nochmals machen muss! Das ganze Geld für so ein Müll ist es nicht Wert! Ich rate jedem davon ab!”
— Amazon.de Customer Review

“Das Produkt ist eine große Lüge hier werden 6 cm versprochen das ist gar nicht machbar das ganze System ist so billig und schlecht produziert und total überteuert Der Verkäufer Service ist auch mies Achtung nach der Bestellung nimmt der Verkäufer das Gerät nicht zurück auch nicht wenn es defekt ist”
— Amazon.de Customer Review

Summary: While many users report positive experiences with the PeniMaster PRO, highlighting its comfort and effectiveness, others have encountered issues related to setup complexity and customer service. It’s essential to weigh these varied experiences when considering this product.

Pricing & Packages (Updated 2025)

The PeniMaster PRO is available in multiple configurations depending on your needs. Each package is backed by a 5-year warranty, 1-month money-back guarantee, and supports international shipping. Below is the most up-to-date breakdown of available packages:

Package Included Components Price (USD)
PeniMaster PRO Complete Set Basic system + Rod system + Belt system + Accessories + Manual + Travel case $230.66
Rod Expander System Basic system + Rod traction system (no belt included) $198.79
Belt Expander System Basic system + Belt system for dynamic wearing (no rods included) $182.71
Basic System Only Vacuum chamber, diaphragm + sluice set, pump ball, lotion, bag (no traction generator) $127.05
Complete Set + Weight Pulling Generator (Bundle) Full complete set (rod + belt) + Additional weight pulling system $286.65
Basic System + Weight Pulling Generator (Bundle) Basic vacuum system + Weight pulling device (no rod or belt systems included) $214.55

💡 Note: Prices may vary depending on location, shipping method, and current promotions. Always order from the official PeniMaster website to ensure authenticity and warranty coverage.

Where to Buy PeniMaster PRO

To ensure product authenticity, warranty coverage, and access to customer support, it’s highly recommended to purchase the PeniMaster PRO directly from the official website:

👉 www.penimaster.com

Why Buy from the Official Website?

✅ Guaranteed Authentic Product

✅ 5-Year Manufacturer Warranty

✅ 1-Month Money-Back Guarantee

✅ Discreet Worldwide Shipping

✅ Access to Exclusive Discounts (e.g. student/medical use)

⚠️ Avoid third-party resellers on platforms like eBay or Amazon unless officially verified, as counterfeit products and missing parts have been reported.

How Does PeniMaster PRO Compare to Other Extenders?

When comparing PeniMaster PRO to other top-rated penis extenders, it’s clear that each product brings unique strengths—and limitations—to the table.

Quick Extender Pro is widely regarded as the most user-friendly and powerful option for beginners and intermediate users. It uses a dual-strap support system that delivers high traction force (up to 4000g) and is incredibly easy to assemble. Its compact design also makes it more discreet under clothing—something PeniMaster PRO struggles with due to its bulkier vacuum system. While PeniMaster offers better glans comfort through vacuum attachment, Quick Extender Pro excels in simplicity and effectiveness.

SizeGenetics, on the other hand, is known for its ergonomic design and long-standing reputation. It features a hybrid strap-noose system that offers decent comfort and secure traction. While not as powerful as Quick Extender Pro in terms of stretching force, it delivers consistent results over time. Compared to PeniMaster PRO, SizeGenetics is easier to wear under clothes and doesn’t involve a learning curve—but may not be as comfortable for men with sensitive glans.

Then there’s the Phallosan Forte Plus, which—like PeniMaster PRO—uses vacuum suction technology. Both products are often recommended for Peyronie’s disease treatment and long-term penile correction. However, Phallosan Forte Plus is generally more streamlined, with fewer components and a more elastic belt-based system that allows for passive wear during sleep. While PeniMaster PRO offers slightly more adjustability and multiple traction options (rod, belt, and weights), it can feel overengineered, especially for new users. In terms of comfort and nighttime usability, Phallosan Forte Plus holds a slight edge.

In summary, PeniMaster PRO is best suited for men who want a medically engineered device with flexible usage modes and are willing to invest the time to learn its setup. However, for those prioritizing simplicity, portability, or faster setup, Quick Extender Pro or SizeGenetics may be better picks—while Phallosan Forte Plus is an excellent alternative for long-duration wear with minimal hassle.

Frequently Asked Questions (FAQs)

❓ How long should I wear PeniMaster PRO each day?

For optimal results, it is recommended to wear the device for 4–6 hours per day, broken into sessions if needed. Some advanced users gradually increase wear time to 8 hours or more, depending on comfort.

❓ How soon will I see results?

Most users begin noticing improvements in flaccid length and elasticity within the first 1–2 months. Measurable gains in erect length typically appear after 3–6 months of consistent use.

❓ Is PeniMaster PRO safe?

Yes, the device is made from medical-grade, hypoallergenic materials and complies with EN ISO 13485 medical device standards. However, users should follow setup instructions carefully and avoid over-tensioning.

❓ Can I wear it under clothes or in public?

The rod expander setup is relatively bulky and not ideal for discreet wear. The belt expander mode is more discreet but still visible under tight clothing. For true stealth wear, alternatives like Phallosan Forte Plus may be better suited.

❓ Is it suitable for Peyronie’s disease?

Yes, PeniMaster PRO is often used as part of non-surgical treatment for Peyronie’s disease, helping to reduce curvature and restore penile symmetry over time.

❓ What’s included in the warranty and return policy?

All PeniMaster PRO packages come with a 5-year manufacturer warranty and a 1-month money-back guarantee, even on used products—provided all components are returned in good condition.

❓ Where can I buy the official PeniMaster PRO?

You should only purchase from the official website to ensure authenticity, warranty protection, and full access to customer support.

Final Verdict: Is PeniMaster PRO Worth It?

The PeniMaster PRO is a well-engineered device backed by medical-grade materials, flexible wear modes, and strong support for men dealing with Peyronie’s disease or seeking gradual penile enhancement. Its vacuum-based system offers impressive comfort once you overcome the learning curve, and the build quality is undoubtedly premium.

However, for many users—especially beginners—the device may feel overly complex, less discreet, and harder to integrate into daily life. Compared to more user-friendly alternatives like the Quick Extender Pro or Phallosan Forte Plus, PeniMaster PRO lacks the same balance of ease, portability, and immediate traction power.

If you’re looking for a medically-oriented extender with multiple traction options and don’t mind the bulk or setup time, then PeniMaster PRO may be worth the investment. But if your priorities are simplicity, fast results, or stealth wear, there are better choices on the market.