U-Rings

Shop all CB-X Chastity u-ring sizes, compatible with all authentic CB-X chastity kits.

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36.00

CB-X clear XL u-ring with CBX logo imprint on ring

Size X-Large Chastity Cage U-Ring

$18.00

single CB-X clear Large u-ring with CBX logo imprint on ring

Size Large Chastity Cage U-Ring

$18.00

one large and one x-large size clear u-rings laying flat next to each other on white background

CB-X 2-pack Large and X-large U-rings

$36.00

single clear CB-X Replacement U-ring

CB-X Replacement U-ring #1

$16.00

single clear CB-X Replacement U-ring

CB-X Replacement U-ring #2

$16.00

single clear CB-X Replacement U-ring

CB-X Replacement U-ring #3

$16.00

single clear CB-X Replacement U-ring

CB-X Replacement U-ring #4

$16.00

single clear CB-X Replacement U-ring

CB-X Replacement U-ring #5

$16.00

Frequently Asked Questions

What is a U-ring?

The U-Ring is the base component that fits behind and around the scrotum, including the base of the penis, which creates the foundation of the chastity device to be securely attached to your body. Available in multiple sizes to accommodate different anatomies and colors to match your chastity cage. All u-rings are made of medical-grade polycarbonate or body-safe ABS plastic for security and durability.

Who Needs a U-ring?

  • Users who need a different size than what came with their kit.
  • Those who want extra u-rings for convenience.
  • Users who have lost or damaged their original ring.
  • Those needing larger sizes beyond the standard U-ring sizes provided in a CB-X kit.

Choosing the Right U-ring

Standard U-ring sizes included in every kit (measurement is the inner diameter of each ring):

  • #1: 2" (50.8mm) - Largest standard size.
  • #2: 1⅞" (47.63mm)
  • #3: 1¾" (44.45mm)
  • #4: 1⅝" (41.28mm)
  • #5: 1½" (38.1mm) - Smallest standard size.

Larger options sold separately:

  • Large: 2⅛" (54.0mm)
  • X-Large: 2¼" (57.2mm) - Largest U-ring available.
  • Sold in a two-pack or individually

How do I determine the correct U-ring size?

The U-ring should fit snugly behind the testicles without causing discomfort or restricting blood flow. If you experience discomfort using the standard U-ring sizes included in your kit, consider purchasing a larger size (sold separately).

Can I use U-rings from different models?

Yes, all CB-X U-rings are interchangeable between models.

What if none of the included U-rings fit me?

We offer two additional, larger-sized U-rings: Large 2⅛" and X-large 2¼". These are available separately. You can find them under Chastity / Kit Parts / U-rings from the main menu.

Do I need to measure for a U-ring separately?

While our sizing guide focuses on cage length and diameter, the correct U-ring size is equally important. Start with the largest ring and work your way down in size, using the five provided U-rings in your kit to find the most secure yet comfortable fit. If you believe your anatomy to be larger than the #1 U-ring will accommodate, please measure before purchase and add the Large or XL u-ring to your CB-X kit.

How tight should the U-Ring be?

The U-ring should be snug enough to prevent removal but not so tight that it causes pain, skin discoloration, loss of blood flow, or numbness.

How do I install the U-Ring?

Place the U-Ring under and behind the scrotum so it's snug with the scrotum and base of the penis. Attach Base #1 to the U-Ring with the pins facing away from the body. Slide Base #2 onto the pins to snap the three parts together, completing the base ring, which forms the foundation of the chastity device.

Available U-ring Options:

  • Sizes: Five standard sizes (I.D. 1½" to 2") included in a complete kit.
  • Additional Large (I.D. 2⅛") and X-Large (I.D. 2¼") are sold separately.
  • Colors: clear, pink, black, and other colors to match cage colors.