The Bathmate Hydromax 9 is a water based penis pump that uses hydro pressure instead of air to deliver strong, even suction around the penis. It is built for men putting in the work on their size and performance goals: length, girth and firmer erections. Men use hydropumps as part of a routine for blood flow, stamina and confidence in the bedroom.
Formerly the Bathmate Hydromax X40. See all old model names →
Constructed from durable, skin safe materials with a comfort focused design, the Hydromax 9 is engineered for reliable daily use when used as directed. Because it is water based, the Hydromax 9 delivers smoother, more evenly distributed pressure than traditional air pumps, helping maintain comfort while training consistently.
The Hydromax 9’s water based design provides a safer, more controlled alternative to traditional air based penis pumps, helping make your daily 10 to 15 minute pumping routine more comfortable and something you can look forward to.
Not sure if the Bathmate Hydromax 9 is the right fit for you. Use our Bathmate size guide to compare measurements and choose the correct model before purchasing.
The Hydromax 9 is the ideal size penis pump for men starting out at lengths of 7 to 9 inches with a maximum girth of 7.50 inches (2.39 inches diameter)
If you’re comparing sizes, you can explore the full Bathmate Hydromax collection to see all available models and size ranges.
Frequently asked questions
The Hydromax 9 is the largest standard Bathmate pump, designed for users who require maximum chamber length and expansion capacity.
The Hydromax 9 is best suited for users measuring approximately 7–9 inches erect, or those who need the largest available size for proper fit.
For most beginners, the Hydromax 9 may be too large unless they fall within the recommended size range. Starting with a smaller model is often easier for control and comfort.
Users typically upgrade to the Hydromax 9 after outgrowing smaller models or when they require additional chamber space for continued use. There is no set timeline as everyone is different.
The Hydromax 9 provides significantly more length capacity than smaller pumps, making it suitable for advanced users who need maximum expansion room.
A larger chamber allows for more expansion space, but proper sizing is important. Using a pump that fits correctly will provide the best overall performance.
Most users begin with 3–5 sessions per week, with each session lasting around 10–15 minutes. Frequency can be adjusted based on experience.
Due to its larger size, the Hydromax 9 may require more experience to use effectively, especially for maintaining proper pressure.
Users typically experience temporary expansion after each session. With consistent long-term use, many men report improvements in size and performance.
When properly sized, the Hydromax 9 can be used comfortably over time, particularly by users who require a larger chamber.
