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Crack the Code to Maximize Your Manhood
4.5 out of 5 stars – Trusted by 100,000+ Men Who Want to Live Large & In Charge
✅ FDA-Cleared & Backed by Science - Proven to maximize blood flow, for harder, bigger erections in just minutes.
✅ Over 30 Years of Proven Growth - Dr. Kaplan’s Auto GRO Pump expands your blood vessels and erectile tissue over time, leading to thicker, longer, and harder erections over time.
✅ Numbers Don’t Lie - Track your growth with the included PumpSmart APP so you can see your size over time. Many users report over 2” in length and up to 25% greater thickness and girth.
Easy Returns
30 Days
1 Year
Warranty
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Trusted By Over 100,000 Men
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“I've been pumping for almost 3 months, and I can't believe the results. My erections are so much thicker and harder, I sometimes don't believe it's mine! I already had to order the next size up - I can't wait to see how much bigger I'll get!”
Brian, 44 years old, FL
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“Dr. Kaplan's Premium Automatic pump is the best penis pump I ever tried. It makes pumping so easy and comfortable. I just choose the pressure I want and it does the pumping for me. It basically makes the process hands free - I use it while checking my email, shopping online, and watching television.”
Manuel, 50 years old, CA
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“I workout a lot, and I've never felt so confident in the locker room until now. Not only are my erections bigger, but I am so much longer - even FLACCID! I've never felt so good taking off my pants!”
Greg, 37 years old, WA
30+ years (helped over 100,000 men)
30-Day Money Back Guarantee
Quick & Discreet Shipping
"The Dr. Joel Kaplan pump is by far the best pump I have used personally as well as in comparison to the ones we have been purchasing."
Ramel Gutierrez
Director at VMediSpa
"I dedicated my career to empower men with the best tools to permanently increase penile length and thickness. Most men report gains of 1-3” or 3-8 cm in length and 25% thicker girth."
Dr. Joel Kaplan, PhD
Founder of the Dr. Joel Kaplan Company
"The Dr. Joel Kaplan Company equips men with the best tools to live large and in charge of their sex lives."
Susan Bratton
Trusted Hot Sex Advisor to Millions
Official Dr. Joel Kaplan Spokesperson
Unlock Fast Results with Auto GRO
Achieve more thickness, more strength, more stamina.
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“I was skeptical at first, but man, this thing works. You use it, and BOOM—bigger, harder, and you’ll see the difference immediately. Plus, stick with it, and the long-term gains are real. Honestly, this is a no-brainer if you want to level up your game.”
Mike T.
Dallas, TX -
“I noticed gains within the first 30 days, length and girth...and now, after staying dedicated and following the instructions, I'm more than satisfied with my results. I know that I'm much larger now than I was before just by looking at my erections. I also noticed doing sex I'm filling my woman up a lot easier than I was before. Trust me when I say that using this product will definitely step your sex game up and help you become a better you!”
Paul W.
San Diego, CA -
“I was honestly surprised how effective this pump was. I don’t have a serious problem, but it’s not always a given that I can last long enough for my partner to really get warmed up. Sometimes they need a lot more time, but after 10 minutes, it was a real struggle for me. Now, I can easily go 20 minutes—without a problem at all. And it’s only been 2 weeks. Even if you don’t have a problem, it still brings up your game.”
James T.
Miami, FL
Ready to Level Up Your Sex Game?
Discover the 3 Types of Men Who Thrive with Auto GRO
The Rock-Solid Crew. Tired of unpredictability? One night you’re rock-hard, the next… not so much. The Auto GRO Pump is your solution for consistent, powerful erections that never disappoint. Boost blood flow, increase rigidity, and make every night feel like your prime again. Confidence starts here.
The Marathon Men. Stamina isn’t just about lasting longer—it’s about staying in total control. The Auto GRO Pump helps you push past your limits, keeping you going stronger and longer. No more early finishes, no more frustration—just pure, unshakable endurance that leaves her completely satisfied.
The Size Seekers. Bigger isn’t just a dream—it’s a goal. The Auto GRO Pump is designed to maximize your potential, helping you gain noticeable length and girth over time. Pump it up, grow with confidence, and give her more to crave every single time.
If this is you, grab your private order of the GRO X4 Pump System today!
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Feel more confident taking your pants off!
Even after one pumping session with Auto GRO, you’ll notice a difference in how long, thick, and ready you are for action.
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“I workout a lot, and I've never felt so confident in the locker room until now. Not only are my erections bigger, but I am so much longer - even limp! I've never felt so good taking off my pants!”
Greg R.
Washington, DC -
“I’ve been with loads of partners. Some can finish easily—under 20 minutes, and others need longer—like 45 minutes. It takes serious training and experience to last that long and stay hard, especially after 40. I found that this pump is an extremely useful tool to last longer.”
Mike S.
Austin, TX -
"I followed Dr. Kaplan’s protocol to a tee, and I already see a difference in only 4 weeks, especially in thickness. I started to feel squished in my pump, so I moved up to the next size. It’s a slow, gradual process, but if you stick to it, you’ll get the results."
Paul M.
Chicago, IL
The Science Behind Serious Gains
How the Auto GRO Pump Works
Dr. Kaplan bio-hacked the way to a big, strong penis with the Auto GRO Pump. Using a safe, pain-free vacuum therapy, the Auto GRO Pump boosts blood flow to expand your penile tissues, making you maximize in all the right ways.
Think of it like a workout for your manhood – every pumping session boosts your natural strength, stamina, and power, helping you last longer and get thicker and harder erections in just 2 minutes.
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Quick & Easy
Insert your penis into the pump, apply gentle suction, and watch it grow bigger and harder in seconds. Boost blood flow, enhance size, and achieve rock-solid confidence—fast and effortlessly.
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Science-Backed
Studies from the National Institutes of Health and leading urologists have shown that penis pumps like the Auto GRO Pump significantly improve length, thickness, and erection quality.
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Pain-Free
No pinching, no pain, and no uncomfortable pulling with the Auto GRO Pump. Just enjoy fast and easy growth that keeps you standing tall and ready for action every time – again and again.
Real Support from Real Experts
to Get Real Results
Get Pro Tips & Advice from Male Performance Coaches –On-Demand
BEN
STEINER
JOE
MURGIA
JORDAN
CHANGE
Talking about your pump journey or your quiz results can feel awkward – we get it.
That’s why we have KaplanCare™ Male Performance Coaches, real men who have been there, done that, and now want to help you achieve your goals.
They’re just a call or message away whenever you need guidance or motivation. Think of them as your personal team of size experts, here to make sure you reach your full potential.
Every question is welcome. Every conversation is confidential.
Call 1-800-354-3944
Monday - Friday | 7:30 AM - 5:00 PM PT
Call now at (619) 294-7777
Open Monday through Friday from 9am - 5pm CST
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