An Anchor System
Kumamoto was designed as a complete platform—end-links, clasp, and strap material engineered together for a seamless, integrated feel.
Kumamoto™ CTS End-Link Rubber Strap for Seiko SRPE – 20mm
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 SRPE. 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:
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Seiko SRPE51 / SRPE53 / SRPE55 / SRPE57 / SRPE61
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Seiko SARX045
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Seiko SRPJ57 / SRPJ59 / SRPJ61 / SRPJ63
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Seiko SRPK29 / SRPK31 / SRPK33 / SRPK35
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Seiko SRPJ65 / SRPJ67 / SRPJ69 / SRPJ71
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: 20mm at lugs, tapering to 16mm 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 SRPE 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.
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.
