X4 Labs™ Learn Why We Are The #1 Penis Extender in the World

INCLUDED FREE WITH EXTENDERS: Up To 100 Additional Fasteners And Memory Foam Pads! (Over $200 Value)

X4 Labs™ Why We’re #1

The perfect fit for you.

Supports Dual
Comfort Straps
Supports Dual
Silicone Tubes
Supports Dual
UltraFit Velcro

X4 Labs™ unique triple option fastener design ensures that all men, both circumcised and uncircumcised, can experience the same comfortable penis enlargement and straightening!

Three types of fasteners.Only our extenders support them all.

Supports Single
Comfort Straps
Supports Single
Silicone Tubes
Supports Single
UltraFit Velcro
We know that no two penises are the same. That’s why we’ve designed the most customizable extenders ever. Our devices support three types of fasteners paired with high grade anti-bacterial memory foam for a perfectly comfortable fit every time!

You should not let anyone tell you what feels comfortable for your penis size and shape. That is why we let YOU choose how YOU want to configure your extender.

Superior comfort and results.
Our unique patent pending 8 slot InfiniteFit Quad Support System and 4 slot Hybrid Support increase results and stability all while maintaining a high level of comfort and seemingly endless customization.

Discreet ShippingYour privacy is important to us.

Blank shipping materials and discreet billing to fully ensure your discretion.

Medical StandardsThere are no compromises.

All X4 Labs devices are made of 100% medical grade materials.

Exclusive Customization OptionsWe want everyone to benefit from our devices.

Standard base with plenty of room for gains.For penis girths up to 6 inches. Included with all devices.
Wider base upgrade for thicker penises.For penis girths up to 6.5 inches. Available as an Add-On.
Standard support with 4 fastener slots.Supports all fasteners. Included with all devices.
Longer 8 slot support for shorter penises.For lengths as low as 1 inch. Available as an Add-On.

The Strongest Spring Tension

Bolster your results with fully adjustable tension.


Friendly Support

Join over 20,000 users on the Penis Enlargement Forum.


Expert Customer Service Support

Call us toll-free for expert advice at

We have an extensive line of extenders to fit any shape, size and budget!
Order Now and Save 85% on the World’s Greatest Extenders!