Cobra Measurements

The specifications on this page are meant as a reference to help you compare between sizes. We do not recommend choosing a size based solely on these numbers. For help with choosing a size, please refer to our Cobra size guide or email us at support@kink3d.com.

Gap measurements for each cage and ring combination can be found on our gap measurement page for Cobra.

Baby Cobra Cobra S Cobra R
Cobra N Cobra S+ Cobra R+
Cobra N+ Cobra BFG

KINK3D Cobra sizing legend

Baby Cobra

Cage Length Entrance Width
Narrow 35 mm 27 mm
Standard 40 mm 32 mm
Wide 45 mm 36 mm

Note: The Baby Cobra is an "all head" geometry. And unlike other Cobra sizes, its head shape doesn't flare out. Therefore it has only one width measurement.

Please refer to the Baby Cobra product page in your preferred color for photos that illustrate its shape.

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Cobra N

Cage Length Entrance Width Head Ring Head Width
Narrow 50 mm 30 mm 28 mm 31 mm
Standard 50 mm 32 mm N/A 35 mm
Wide 50 mm 35 mm N/A 39 mm

Note: The Cobra N in Standard and Wide versions is an "all head" geometry. Therefore its entrance width and head ring width are combined.

Please refer to the Cobra N product page in your preferred color for photos that illustrate its shape.

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Cobra N+

Cage Length Entrance Width Head Ring Head Width
Narrow 60 mm 32 mm 30 mm 34 mm
Standard 60 mm 36 mm 32 mm 35 mm
Wide 60 mm 37 mm 35 mm 39 mm

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Cobra S

Cage Length Entrance Width Head Ring Head Width
Narrow 70 mm 32 mm 32 mm 35 mm
Standard 70 mm 37 mm 33 mm 37 mm
Wide 70 mm 41 mm 37 mm 40 mm

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Cobra S+

Cage Length Entrance Width Head Ring Head Width
Standard 80 mm 37 mm 33 mm 37 mm
Wide 80 mm 41 mm 37 mm 40 mm

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Cobra R

Cage Length Entrance Width Head Ring Head Width
Standard 90 mm 37 mm 33 mm 37 mm
Wide 90 mm 43 mm 37 mm 40 mm

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Cobra R+

Cage Length Entrance Width Head Ring Head Width
Standard 105 mm 38 mm 35 mm 39 mm
Wide 105 mm 43 mm 39 mm 42 mm

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Cobra BFG

Cage Length Entrance Width Head Ring Head Width
Standard 120 mm 40 mm 37 mm 40 mm
Wide 120 mm 43 mm 40 mm 43 mm

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Legacy Sizes

Cage Length Entrance Width Head Ring Head Width
S 1.05x 70 mm 38 mm 35 mm 39 mm
S+ 1.05x 80 mm 38 mm 35 mm 39 mm
R 1.05x 90 mm 40 mm 35 mm 39 mm
BFG (2020-2023) 115 mm 40 mm 37 mm 40 mm