{"product_id":"acs-headsets-hdst1439-bicycle-headsets","title":"ACS Maindrive IS38 - 25.4 \u0026 26 Blue CNC Machined Alloy Stem with Sealed Bearings, Multi-Size Compatibility, and 45 Bearing Technology","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eEnhance your bike's performance and style with the ACS Maindrive IS38\/25.4|IS38\/26 Blue - a premium, CNC-machined alloy crankset component designed for serious cyclists who demand durability, precision engineering, and sleek aesthetics.\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\u003eCrafted from high-grade CNC machined alloy, the ACS Maindrive features a lightweight yet robust construction, ensuring optimal strength without adding unnecessary weight. Its blue anodized finish not only provides corrosion resistance but also adds a striking visual appeal, making it a standout addition to any bike build.\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\u003eEquipped with sealed 45\/45-degree bearings, this crankset component delivers smooth, reliable performance even under tough riding conditions. The sealed bearing design minimizes dirt and water ingress, extending component lifespan and maintaining optimal rotation efficiency for a superior riding experience.\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\u003eThe Maindrive IS38\/25.4|IS38\/26 is compatible with a variety of handlebars thanks to its versatile S.H.I.S. stem clamp diameters (IS38\/25.4 and IS38\/26). Whether you're upgrading your road bike, mountain bike, or gravel setup, this component offers seamless integration. The set includes options with 1\" (25.4mm) and 1-1\/8\" (28.6mm) diameters, plus an adapter for converting between sizes, providing versatility for a wide range of bike configurations.\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\u003eDesigned with a sleek blue finish, the ACS Maindrive is perfect for riders seeking both high performance and standout style. Its minimalist yet rugged design makes it suitable for cross-country, trail riding, commuting, or high-speed road cycling. Its lightweight design (only 93g) ensures improved responsiveness and agility on every ride.\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\u003eThe use of CNC machining ensures precise manufacturing tolerances, while sealed bearings grant durable, maintenance-free operation. Its versatile sizing options and proven engineering make it a go-to choice for bike builders and enthusiasts aiming for a custom, high-performance drivetrain.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003eUpgrade your bike with the ACS Maindrive IS38\/25.4|IS38\/26 Blue for enhanced reliability, sleek aesthetics, and top-tier engineering-designed to elevate every ride.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eConstructed from CNC machined alloy for superior durability, ensuring long-lasting strength and performance under rigorous riding conditions.\u003c\/li\u003e\n\u003cli\u003eFeatures sealed mechanism with 45\/45 degree bearings, providing smooth, reliable steering and reducing maintenance needs over time.\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple steerer tube diameters including 1\" (25.4mm), 1-1\/8\" (28.6mm), and equipped with a convenient reducer, making it versatile for various bike setups.\u003c\/li\u003e\n\u003cli\u003eStylishly finished in vibrant blue, combining aesthetic appeal with technical excellence, suitable for both performance racing and everyday riding.\u003c\/li\u003e\n\u003cli\u003eDesigned for lightweight performance at only 93g, this stem enhances handling precision and bike agility without adding unnecessary weight.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"ACS","offers":[{"title":"Default Title","offer_id":42355116343363,"sku":"HDST1439","price":24.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/AM9324.jpg?v=1773491254","url":"https:\/\/365cycles.com\/products\/acs-headsets-hdst1439-bicycle-headsets","provider":"365 Cycles","version":"1.0","type":"link"}