First Expansion Cylinder

In stock

Dr. Joel Kaplan's Erection Expansion Cylinder is the most effective way to enhance your erection.

  • Achieve & Maintain Erection for Sex
  • Increase Erection Size & Quality
  • Prevent Penile Shrinkage Due to Age
  • Reverse Penile Atrophy
  • Protected by 3-Month Warranty

Dr. Joel Kaplan's Erection Expansion Cylinder is the most effective way to achieve & maintain erection for sex, prevent shrinkage due to age, and increase erection size & quality.

Regular use has been proven to increase natural erection rigidity. Most users report a measurable & visible increase in length and thickness.

To create an erection, connect the cylinder to Dr. Joel Kaplan's manual or electric pump. Place the cylinder over the penis and pump. The gentle vacuum pressure brings blood-flow to the penis, resulting in erection.

All Dr. Joel Kaplan cylinders are compatible with all Dr. Joel Kaplan pumps, ensuring your pump system can grow with your gains.

This Dr. Joel Kaplan Erection Expansion Cylinder is specially-sized to offer restriction-free blood-flow to the penis, maximizing erection expansion.

Dr. Joel Kaplan's products include KaplanCare™ customer support and education. Our helpful staff is available to answer your questions online and over the phone.

How to Choose Your Cylinder Size

The cylinder should give you enough room to fully expand your erection, with a little extra room for growth. If you are filling up the cylinder, it is time to order the next size up. The cylinder should not limit the size of your erection.

Measure your penis using the instructions below to select a cylinder that fits properly and provides maximum expansion and comfort.

  • Wrap a string around the ERECT shaft near the base.
  • Mark where the ends of string meet.
  • Lay string flat and measure the distance between the two marks with a ruler.

Proper Penis Measurement

Use the chart below to determine your best size:

Penis Circumference (Inches) Cylinder Size (Opening Diameter)
Up to 5" Circumference 1.75" (S)
5.10" - 5.50" Circumference 2.00" (M)
5.51" - 6.25" Circumference 2.25" (L)
6.26" - 8.00" Circumference 2.50" (XL)

  • The Medium size fits over 80% of men.
  • Your order includes a 30-Day FREE Size Exchange (shipping cost not included).

Dr. Joel Kaplan, a PHD from Saybrook Institute, is a pioneer of men's products for sexual health and wellness. For over 30 years, he has dedicated his career to empower men with the best tools for sexual enhancement and pleasure.

Warning: Consult your physician if you have a blood-disorder or take blood-thinners. Apply the minimum amount of vacuum pressure necessary to achieve an erection. Discontinue use if pain occurs. Use as instructed. Misuse of a vacuum pump may result in injury.

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