{"product_id":"surly-single-cogs-cog-road-bike-touring-bike-fitness-crossbike-cruiser-mountain-bike-dirt-jumper-fw2079","title":"Surly 21-Tooth Single Speed \u0026 9-Speed Compatible 3 - 32\" Steel Splined Cassette Cog - Hardened Chromoly, Shimano Freehub Fit, Lightweight 86g","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eUpgrade your singlespeed or 9-speed drivetrain with the Surly Single Cassette Cog 3\/32\" Splined 21t, the perfect solution for riders seeking durability, simplicity, and reliable performance. Crafted from high-grade SCM 415 hardened chromoly steel, this cog delivers exceptional strength and wear resistance, making it ideal for city commuting, touring, or mountain biking adventures.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eEngineered for optimal compatibility, the Surly 21-tooth cassette cog fits Shimano freehub splines, specifically designed for Shimano HG 7-Speed bodies. While intended primarily as a singlespeed gear, it can also be stacked with other cogs to accommodate 9-speed shifters-though multi-gear shifting may not be as crisp as with multi-gear-specific cogs. Weighing only 86 grams, this lightweight component ensures minimal rollover resistance and efficient power transfer, enhancing overall riding performance.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eDesigned for versatility and longevity, the Surly Single Cassette Cog features a 3\/32\" tooth profile suitable for various styles of riding, from urban commuting and bikepacking to mountain trails. Its rugged steel construction and precise splined fit guarantee secure engagement and easy installation, providing a clean, low-maintenance setup that stands up to the rigors of rugged cycling environments.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003eOptimize your bike's drivetrain with this durable, performance-driven sprocket that combines innovative materials, engineering excellence, and functional style. Perfect for riders seeking a reliable, cost-effective upgrade to their singlespeed or multi-gear setup, the Surly Single Cassette Cog is your go-to component for smooth, efficient riding.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eOptimized for durability and lightweight performance, the Surly Single Cassette Cog 3\/32\" features SCM 415 hardened chromoly steel construction for superior strength and resistance to wear.\u003c\/li\u003e\n\u003cli\u003eDesigned to fit Shimano freehub splines, this 21-tooth single speed cog offers seamless installation and compatibility with various bike setups, including stacked configurations for multi-gear versatility.\u003c\/li\u003e\n\u003cli\u003eConstructed from high-quality steel, this 3\/32\" cog ensures reliable power transfer and durability in all riding conditions, making it ideal for urban commuting, mountain biking, or gravel adventures.\u003c\/li\u003e\n\u003cli\u003eVersatile performance with the potential to be used alongside a 9-speed shifter, though optimized for single speed use-perfect for riders seeking a lightweight, minimalist drivetrain solution.\u003c\/li\u003e\n\u003cli\u003eLightweight at just 86 grams, this durable cassette cog is engineered for riders who prioritize simplicity, efficiency, and rugged reliability on the trail or city streets.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Surly","offers":[{"title":"Default Title","offer_id":42206971166787,"sku":"FW2079","price":41.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/FW2079.jpg?v=1773817091","url":"https:\/\/365cycles.com\/products\/surly-single-cogs-cog-road-bike-touring-bike-fitness-crossbike-cruiser-mountain-bike-dirt-jumper-fw2079","provider":"365 Cycles","version":"1.0","type":"link"}