Tange Seiki is a Japanese brand known for precision headsets and bottom brackets – smooth, durable and custom-ready.
Tange Seiki is a respected Japanese manufacturer of bicycle headsets, bottom brackets and frame hardware, trusted by custom framebuilders and serious cyclists worldwide. Known for traditional craftsmanship and mechanical precision, Tange Seiki creates components that elevate the feel and longevity of any build.
Their product line includes:
integrated, semi-integrated and threaded headsets – from 1" vintage to modern tapered setups,
bottom brackets – including square taper BSA, JIS and cartridge types with Cr-Mo or alloy spindles,
cups, spacers, sleeves and bearing kits – ideal for road, gravel, touring and retro restorations.
Tange Seiki components are chosen by riders who appreciate flawless fit, durable bearings and timeless aesthetics. Made in Japan and engineered for smooth rotation and reliable long-term performance, they’re a staple in premium workshops and custom builds.
At Woo Hoo Bikes, we recommend Tange Seiki to cyclists who want every detail to matter – from the head tube to the bottom bracket.
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