An Anchor System
Kumamoto was designed as a complete platform—end-links, clasp, and strap material engineered together for a seamless, integrated feel.
Kumamoto™ System
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Seamless at the Lugs
Purpose-built end-links create a clean, continuous line from case to strap/bracelet—no awkward gaps, no generic fit.
Double Flip-Lock Security
A firm, reassuring close with refined tolerances. Built to feel precise every time you lock in—on steel or on rubber.
Refined, Not Flashy
Tool watch energy with premium execution—clean edges, tight fit, and a finish that looks sharp without shouting.
Kumamoto ™ CTS End-Link Rubber Strap for Seiko SSK GMT
Designed for the Seiko enthusiast who demands integrated precision and everyday comfort, the Kumamoto ™ CTS End-Link Rubber Strap is a seamless upgrade for your Seiko SSK GMT. Inspired by the robust geometry of oyster-style bracelets, this strap features a solid, custom-molded end link that hugs the case for a cohesive OEM look—no gaps, no compromises.
Crafted from high-performance FKM rubber, the Kumamoto CTS offers superior durability, resistance to sweat, heat, and UV, and a soft-touch finish for all-day wear. The bracelet-style taper, subtle chamfering, and matching stainless steel deployant clasp bring a refined yet tool-ready aesthetic to your Seiko.
Compatible with:
- Seiko SSK00X Series (SSK001, SSK003, SSK005)
- Seiko SRPD5X Series (SRPD53, SRPD55, SRPD57, SRPD59)
- Seiko SRPD6X Series (SRPD61, SRPD63, SRPD67, SRPD69)
- Seiko SRPD7X Series (SRPD71, SRPD73, SRPD75)
Specs:
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Material: Premium FKM Rubber
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End Link: Custom molded end-links provided with purchase(see compatible models above)
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Width: 22mm at lugs, tapering to 18mm at the clasp
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Hardware: Brushed, corrosion resistant 316L stainless steel flip-lock deployant clasp
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Water- and sweat-resistant
Upgrade your Seiko with a strap that wears like a bracelet and performs like a dive strap—built for those who appreciate purpose-driven design with a nod to the classics.
Customers praised this rubber watch strap for its "excellent fit and finish" that "looks like it came with the watch." The strap is comfortable and fits perfectly. While sizing requires careful measuring and cutting, shoppers found it straightforward with proper instructions. One customer noted it was "a little challenging" for novices but manageable.
Some of the reviews shown are from related products the merchant grouped with this one.
M
I fit this to the skx013 and wears like a dream. Rubber is comfortable and has brought new life to my first mechanical watch.
A
Great strap. I followed the video provided on the website to help change my strap. Very comfortable fit and great look. This will not be my last purchase.
A
매우좋아요 한국인이 시킨건 처음같은데
동양인한테도 찰떡이예요 더많은류들 기대해볼게요
D
I purchased the Navy Blue Kumamoto strap for my 41 MM Omega SMPC (2017 version). I couldn't ask for a better strap! The end links fit perfectly, the strap cuts to size with ease, and the comfort and utility of the strap is excellent. I've tried MANY straps and bracelets on the 41mm SMPC, but none have complimented the watch like the Kumamoto does.
T
Goes perfectly with my Seiko SRPF77
A
Like the product, looks great as advertised. Clasp is good and secure but doesn’t feel quite as premium as some others I’ve purchased.
B
Absolutely love the strap. Great quality..so much so I already bought another one within 2 weeks of buying the first. Should have the new one Monday.
A
Comfortable rubber strap with good end-link fitment on pre-2018 SMPc 41mm; no micro-adjust on clasp (w/minor sharp edges) and no quick release spring bars. Overall a good product that could be great with upgraded spring-bars and clasp with modern features.
D
Best strap link combo in the market. Elevates the 2254.50 Peter Blake to a new level. Feels like a ln OEM set up. Product of the year in my opinion.
R
Awesome..got it w my 2018 blue seaster 300 41mm. Def hope they make more.
J
This is the perfect strap for this watch and a really high quality product.
Cant recommend it enough.
I
Fits the OEM clasp while is what I was looking for. Would recommend.
R
Really nice perfect for my Seiko SKK GMT. End links are solid and high quality. FKM rubber strap also very nice. Just be carful of cutting to short, go 1 hole at a time. Remember short the 6 o clock side 😊.
M
I love this strap and want to give this strap 5 stars so damn bad . Buckle is great , the look is amazing ,i love end links with rubber straps a ton . My only complaint is the rubber used for the strap . It’s super comfy but I already question the end that the spring bar goes through in the rubber . It’ stretches a lot and wouldn’t surprise me in a good snag the rubber breaks or in general wears quickly . If you could make the rubber hard like OEM omega straps it would be killer . Beyond that , i love this strap.
g
Put it on yesterday and almost forget I’m wearing it. Fits like a glove. Really lightened up the watch. So far so good.
N
this is one of my best investment for rubber strap. I hope I can buy one for 124720 explorer strap like this. why only tudor ranger?
T
Super high Quality I love the strap for my Seiko King Turtle
F
Love this strap. Added to my quartz seamaster 300m and the end links and rubber are a great fit. Big fan of rubber straps on my watches(use isofrane, zealande, crafter blue...) . Live in SC and rubber is just more comfortable to me in the summer months.
I also really like the end link connection as it allows the strap to flex a little more. some fitted rubber straps seem to "bow", but the end links allow it flex and move around more especially when desk diving.
waiting the planet ocean release, and would love to see one for the SKX007 and Pelagos 42mm.
J
Best straps I ever bought for my Seiko turtle can't even tell you how happy I am with the quality and the delivery
S
Amazing band and the end links are perfect
A
Beautiful, high quality watch band. So happy with this purchase.
A
Great product even better customer service!
