Penis Pumping
Hanging builds length over time. A good pump adds fullness and girth work to the same routine. These are the two brands I trust enough to put my name next to.
- Hand-picked by Ben
- Ships discreetly from each brand
- Pairs with your Malehanger
Heads up: these are affiliate links. If you buy through them, Malehanger earns a small commission at no extra cost to you.
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Auto G.R.O. Pump System
Electric pump that holds the pressure you set, so you’re not squeezing a bulb.
- Set a target, it holds it automatically
- Whisper-quiet, smaller than a soda can
- Clicks onto any Kaplan cylinder
10% off when you buy through our link
STIMULATE Red Light Wrap
A red and near-infrared LED wrap you wear around the cylinder during a pump session.
- 170 LEDs at 655nm red + 880nm near-infrared
- Three intensity modes
- USB-C with a portable power bank
Why pump alongside your Malehanger?
Two kinds of work
Hanging puts steady traction on the shaft for length. A vacuum pump draws blood in for fullness, girth work and better-feeling erections.
No more bulb squeezing
Both pumps here are electric. You set the pressure, the pump holds it, and your hands stay free.
Measured, not guessed
Digital readouts mean you know the exact pressure, so you can stay in a safe range and repeat what works.

Auto G.R.O. Pump System
Dr. Joel Kaplan has made pumps for decades, and the Auto G.R.O. is the modern version: a compact electric motor that clicks onto a Kaplan cylinder instead of a hand bulb and hose. Set your target pressure on the LCD screen and it tops itself up to hold it for the whole session.
- LCD readout of target and live pressure, plus a session timer
- Starter system (one cylinder) or Dual system with a second cylinder
- Free PumpSmart app to log sessions and measurements
- Ships in unmarked packaging
Cylinder sizing by erect girth
Between sizes? Kaplan recommends going up. They offer a 30-day size exchange.

STIMULATE Red Light Wrap
An add-on for pump sessions. The wrap goes around your cylinder and shines red and near-infrared light while you pump. Kaplan designs it around blood flow, which is the same thing a pump is working on.
Built for Kaplan cylinders. Already have an Auto G.R.O.? The wrap is sold on its own, or bundled with a pump system.

Epic Pump Pro Kit
Epic’s smart pump mounts directly on the cylinder with no hose. Choose air-only for near-silent sessions, or water + air for hydro pumping in the shower or bath. Ten preset modes cycle through pressure, hold and release for you, or you can build your own routine in the free app.
Cylinder widths from 1.5″ to 2.87″, in 9″ or 12″ lengths. The Pro Kit adds a vibrator, soft pad and lubricant. 180-day money-back guarantee.
Auto G.R.O. vs. Epic Pump
| Kaplan Auto G.R.O. | Epic Pump Pro Kit | |
|---|---|---|
| Power | Electric, hands-free | Electric, hands-free |
| Pressure control | Holds your target pressure | Exact pressure plus 10 auto routines |
| Pumping style | Air | Air only, or water + air |
| Hose | None. Clicks onto cylinder | None. Mounts on cylinder |
| App | PumpSmart (logging) | Custom routines and logging |
| Cylinder sizes | 1.75″ to 2.50″ (Dual adds a 2nd cylinder) | 1.5″ to 2.87″, 9″ or 12″ long |
| Add-ons | STIMULATE red light wrap | Vibrator, soft pad, lube in kit |
| Guarantee | 30-day money back | 180-day money back |
| Best for | Simple set-and-forget sessions | Programmable routines and hydro pumping |
Details come from each brand’s site. Check their pages for current pricing and terms.
Fitting pumping into your routine
Hang first
Do your normal Malehanger sets. Hanging works best on relaxed, flaccid tissue.
Let things recover
Give it a break before pumping, or pump on a separate day. Don’t stack hard sessions back to back.
Pump low and slow
Start at the lowest pressure, keep sessions short, and release pressure between sets. More pressure isn’t better.
Log it
Note your pressure, time and measurements. Both apps make this easy, and it’s how you spot what’s working.
Pumping FAQs
There is no reliable evidence that pumping alone produces permanent size gains. A pump draws blood into the penis, creating fullness that fades over the following hours. Many men use a pump for that temporary fullness, for erection quality, or alongside traction work like hanging, which is the approach more often linked to gradual length change.
Many men do, as long as they don't stack hard sessions back to back. A common approach is to hang first, give the tissue a break, then do a short, low-pressure pump session, or to pump on separate days. Keep total workload modest and take rest days, especially when you're starting out.
Both are electric, hands-free pumps with digital pressure control. The Auto G.R.O. is simple: set a target and it holds it, and it pairs with Kaplan's STIMULATE red light wrap. The Epic Pump adds programmable routines, 10 presets and a water + air option for hydro pumping. Choose based on whether you want set-and-forget or more control.
Size by erect girth. Kaplan's guide is Small 1.75" for under 4.5", Medium 2.00" for 4.5" to 5.5", Large 2.25" for 5.5" to 6", and X-Large 2.50" for 6" and up, going up a size if you're in between. Epic offers cylinders from 1.5" to 2.87" wide. Check each brand's sizing guide before ordering.
Start short, around 10 to 15 minutes with breaks to release pressure, at the lowest setting. Longer or harder sessions don't mean better results and raise the risk of bruising, blisters or red spots. Never leave a constriction ring on longer than about 30 minutes, and follow the instructions that come with your pump.
Pumping at moderate pressure for short sessions is generally well tolerated, and vacuum devices are used medically for erectile dysfunction. Problems come from too much pressure or time. Stop if you feel pain, numbness or see dark spotting. If you have a bleeding disorder, take blood thinners, or have Peyronie's disease, talk to a doctor first.
The STIMULATE wrap surrounds your pump cylinder with 170 LEDs at 655nm red and 880nm near-infrared light, worn during a normal pump session. Kaplan designs it to support blood flow, which is what a pump works on. It has three intensity modes and runs off USB-C with an included power bank.
Yes. These are affiliate links, so Malehanger earns a small commission if you buy through them, at no extra cost to you. Buying the Auto G.R.O. through our link also gets you 10% off. I only list brands I'd use alongside my own Malehanger routine.
Length from hanging. Fullness from pumping.
The Malehanger is the base of the routine. Add a pump when you’re ready.

