AnchorFlex™ End-Link for Tudor Black Bay GMT 41 - Bathyscaphe Black

AnchorFLEX™ End-Link

For Tudor Black Bay GMT 41

Upgrade your Black Bay GMT 41 with FKM rubber shaped for your original Tudor end links.

Requires your original Tudor end links — spring bars included
Integrated curved-end look at the case
Fits 5.25″–8″ wrists
Soft FKM rubber, comfortable from day one

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Material: AnchorFLEX™ FKM rubber

Hardware: 316L Stainless Steel Tang-Buckle

Fitment: Made for Tudor Black Bay GMT 41mm models

Material: AnchorFLEX™ FKM rubber

A deliberately tight fit. We spec the end thicker than most straps for strength, so seating the spring bars takes more force than you might expect. That's by design — the fit loosens slightly after the first few installs and never gets sloppy. Take your time on the first fitting.

Attachment: Uses original Tudor bracelet end links, spring bars are included.

Length: 3-piece strap design with 2 hole ends (100mm/120mm) and one buckle end (80mm) for maximum flexibility. Comfortably fits wrists from 5..25" to 8"

Important: This strap is designed for use with your original Tudor bracelet end links. Anchor end links are not included.

AnchorFlex™ End-Link

Integrated look. Everyday simplicity.

Fits your Tudor Black Bay GMT 41mm using your original Tudor end links, for a case-hugging profile with the simplicity of a traditional buckle.

Requires your original Black Bay GMT end links. They aren't included — spring bars are.

Check your bracelet before ordering

This fitment depends on which bracelet your watch came on, not just which watch you own.

Fits the Black Bay GMT 41mm (M79830RB series) — 22mm lug width, 10mm center links
Does not fit the Black Bay 58 GMT (39mm)
Does not fit the Black Bay Pro (39mm)
Does not fit any watch bought without its bracelet

Measure a center link on your bracelet. If it's 10mm across, this is your strap.

The same Flagship rubber, shaped for an integrated fit

This is the AnchorFlex Flagship you already know, cut to sit flush against the case. No clasp mechanism, no extra hardware — just the strap, your end links, and a 316L buckle.

Why FKM

FKM fluoroelastomer is what we build every AnchorFlex strap from, and it's why they last:

Holds up to UV, heat, and chemicals
Won't crack, fade, or go brittle with age
Soft and pliable against the wrist, but structured enough to keep its shape
No sagging or collapse the way cheap rubber does

Flagship profile

Clean modern lines with a subtle taper
Substantial enough for daily wear, refined enough to dress up
Built to complement a tool watch, not overpower it

It's the strap you leave on.

Specifications


Material	AnchorFlex™ FKM rubber
Buckle	316L stainless steel
Attachment	Your original Black Bay GMT end links — not included. Spring bars included.
Length	3-piece: two tail ends (100mm / 120mm), 80mm buckle end
Fits	Wrists 5.25″–8″
Profile	Slim and flexible for all-day wear

FAQs

Some end-link installs can feel tight at first because the thickness rubber strap at the end-link is maximized to ensure durability. There are a few ways to get it installed:

First, try gently wiggling and pushing the spring bar through until the spring bar pops into the opposite side of the end link. This can require some effort.

You can also squeeze the rubber portion of the strap into the end link between your thumb and index finger while pushing the spring bar into place. This helps compress the rubber slightly and gives the spring bar more room to seat properly.

If those techniques do not work, our premium 1.7mm spring bars can be used as an alternative. There is no downside to using them, but we recommend trying the first two installation methods first since the standard spring bars usually work once everything is seated correctly.

If you still have trouble, contact us and we can help troubleshoot the install.

AnchorFLEX™ straps are made from premium FKM rubber and have been third-party tested to be free of harmful fluorinated “forever chemicals” within the scope of the testing performed. We do not intentionally add PFAS-based coatings, surface treatments, or chemical finishes to our straps. Because FKM is a fluorinated rubber, we avoid vague blanket claims and clearly disclose the material. Customers who prefer to avoid fluorinated rubber entirely may prefer our nylon, sailcloth, leather, or other non-FKM strap options.

AnchorFlex™ End-Link for Tudor Black Bay GMT 41 - Bathyscaphe Black