{"product_id":"full-speed-ahead-headset-upper-28-6-hdup0029","title":"Full Speed Ahead DX Pro Alloy External Headset Lower - EC49 - 40 for Tapered 50mm - 57mm Head Tubes, 1.5\" Precision Sealed Bearings, Lightweight Performance Engineering","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eIntroducing the Full Speed Ahead DX Pro Lower Black | EC49\/40 1.5\" - a premium external headset lower cup engineered for optimal performance, durability, and seamless compatibility with tapered head tubes. Crafted with precision, this component is designed to enhance your bicycle's steering precision and reliability, whether you're racing, mountain biking, or commuting.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Construction:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eConstructed from high-grade aluminum alloy, the DX Pro Lower combines lightweight durability with excellent resistance to corrosion. The alloy material ensures a strong, lightweight component that withstands demanding riding conditions, making it ideal for competitive cycling and daily use. The included rubber seal enhances protection against dust, dirt, and moisture, prolonging bearing life and maintaining smooth steering.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Engineering:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eEngineered for precise handling at every turn, this external head set lower cup features a 50mm\/57mm tapered seat fit for secure, slop-free installation. The 1.5\" alloy external cup incorporates sealed bearings with a 36 \/45 bearing angle, ensuring smooth, responsive steering and reduced friction. Whether on rugged mountain trails or city streets, experience enhanced control and stability.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eComponents \u0026amp; Technology:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eEquipped with high-quality sealed bearings (36A \/45A ACB), the DX Pro Lower provides excellent load distribution, protecting internal components from contaminants and extending service life. The EC49\/40 standard compatibility ensures broad compatibility with a wide range of frames, while its precise specifications guarantee a snug fit with tapered steerer tubes and 50\/57mm head tube diameters.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eStyle \u0026amp; Use Case:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003eFeaturing a sleek black finish, this headset lower cup adds a professional, clean aesthetic to your bicycle. Its versatile design suits mountain bikes, gravel bikes, and road bikes requiring robust tapered head tube support. Perfect for bike builders and enthusiasts seeking reliable performance upgrades or replacement parts.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003eInnovative Features:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Aluminum alloy construction for strength-to-weight optimization\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Sealed bearing technology for superior weather resistance and longevity\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Compatible with tapered 50mm\/57mm head tubes for versatile frame fitting\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- meticulously engineered for precise steering response and durability\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003eUpgrade your bicycle's steering system with the Full Speed Ahead DX Pro Lower Black | EC49\/40 1.5\". Designed for high performance, engineered for durability, and styled for the competitive cyclist, this external headset lower cup is the ideal choice for a smooth, reliable ride.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eHigh-quality alloy construction ensures durability and lightweight performance for demanding rides.  \u003c\/li\u003e\n\u003cli\u003eEngineered for tapered 50mm and 57mm head tubes, offering a perfect fit and enhanced steering precision.  \u003c\/li\u003e\n\u003cli\u003eFeatures sealed 1.5\" alloy external cups with 36A \/45A ACB bearings for smooth, reliable performance in all weather conditions.  \u003c\/li\u003e\n\u003cli\u003eDesigned for versatile mountain and road bike applications, combining style with high-performance engineering.  \u003c\/li\u003e\n\u003cli\u003eInnovative rubber-sealed design minimizes dirt ingress and prolongs component lifespan, making it ideal for off-road and long-distance cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Full Speed Ahead","offers":[{"title":"Default Title","offer_id":42207815467075,"sku":"HDUP0029","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/35749.jpg?v=1780526103","url":"https:\/\/365cycles.com\/products\/full-speed-ahead-headset-upper-28-6-hdup0029","provider":"365 Cycles","version":"1.0","type":"link"}