{"product_id":"wolf-tooth-premium-ec-headsets-external-cup","title":"Wolf Tooth Premium EC Headsets - External Cup","description":"\u003cp\u003e\u003cstrong\u003eWolf Tooth Premium EC Headsets – External Cup\u003c\/strong\u003e are precision-machined in the USA from aircraft-grade \u003cstrong\u003e6061 aluminum\u003c\/strong\u003e and engineered for riders who demand long-term durability, precise steering, and refined color-matched detail. Designed for frames that use external bearing cups, these EC headsets position the bearings outside the head tube for classic fit standards with modern sealing performance.\u003c\/p\u003e\n\n\u003cp\u003eWhat sets Wolf Tooth headsets apart is their triple-layer sealing strategy. From O-ring protection at the steerer interface to custom-molded lip seals and dual-lip crown race protection, each component is built to shield the bearings from water, grit, and trail debris. Inside, premium \u003cstrong\u003eEnduro stainless steel sealed bearings\u003c\/strong\u003e provide smooth rotation and carry a lifetime warranty—because a headset should be the last thing you worry about on a ride.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in multiple anodized colors, these Premium EC Headsets deliver both mechanical precision and a clean aesthetic upgrade for custom builds, restorations, or performance-focused projects.\u003c\/p\u003e\n\n\u003ch3\u003eExternal Cup Design \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeadset Type:\u003c\/strong\u003e EC (External Cup) – bearings sit outside the head tube.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpper Compatibility:\u003c\/strong\u003e Frames with 34mm upper head tube inner diameter (EC34).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower Compatibility:\u003c\/strong\u003e 34mm, 44mm, or 49mm lower head tube inner diameter options.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Enduro stainless steel sealed bearings (lifetime warranty).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBevel Angle:\u003c\/strong\u003e 36° x 45°.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined 6061 aluminum.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Uppers and lowers are sold separately. Stack height designation includes a 10mm cup.\u003c\/p\u003e\n\n\u003ch3\u003eUpper Assembly Features\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Stem Cap + Spacer:\u003c\/strong\u003e Ultralight design with aluminum bolt and included star nut.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCover Options:\u003c\/strong\u003e 5mm cover = 16mm total stack | 15mm cover = 25mm total stack | 25mm cover = 35mm total stack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eO-Ring Seal:\u003c\/strong\u003e Prevents water intrusion around the steerer tube.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Upper Lip Seal:\u003c\/strong\u003e Additional bearing protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Cap Bolt Torque:\u003c\/strong\u003e 2–3 Nm with light grease on threads only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Upper assemblies ship with a star nut for steel or aluminum steerer tubes only. Never use a star nut on a carbon steerer tube—use a compression plug instead (sold separately).\u003c\/p\u003e\n\n\u003ch3\u003eLower Assembly Features\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Lip Crown Race Seal:\u003c\/strong\u003e Protects the lower bearing in wet and muddy conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower Stack Height:\u003c\/strong\u003e 12.25mm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e EC34 lower – 37g | EC44 lower – 45g | EC49 lower – 54g.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEC34 lowers are not compatible with Surly 1-1\/8” straight steerer forks. A crown race adapter (sold separately) allows use of smaller 1-1\/8” or 1-1\/4” steerer tubes with a larger 1-1\/2” lower headset cup.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose the Premium EC Headset\u003c\/h3\u003e\n\u003col class=\"design_benifits\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Sealing System:\u003c\/strong\u003e Three layers of protection for long bearing life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Machining:\u003c\/strong\u003e Tight tolerances ensure smooth steering and proper preload.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLifetime Bearing Warranty:\u003c\/strong\u003e Enduro stainless bearings built for the long haul.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Finish Options:\u003c\/strong\u003e Wide color selection for a refined build aesthetic.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFinal Take\u003c\/h3\u003e\n\u003cp\u003eThe Wolf Tooth Premium EC Headsets – External Cup offer the reliability of classic external cup standards with modern sealing technology and USA-made precision. For riders building a bike that deserves long-term performance and thoughtful detail, this headset is a dependable, high-quality foundation.\u003c\/p\u003e","brand":"Wolf Tooth","offers":[{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Black","offer_id":45079737401388,"sku":"EC34U-5MM-BLK","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Red","offer_id":45079737434156,"sku":"EC34U-5MM-RED","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Blue","offer_id":45079737466924,"sku":"EC34U-5MM-BLU","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Orange","offer_id":45079737499692,"sku":"EC34U-5MM-ORG","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Gold","offer_id":45079737532460,"sku":"EC34U-5MM-GLD","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Raw 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