{"product_id":"sram-x4-long-cage-7-speed-rear-derailleur-rd5951-bicycle-rear-derailleur","title":"SRAM X4 Rear Derailleur 7-9 Speed Long Cage, Alloy \u0026 Steel Construction, Precise 1:1 Actuation, Lightweight, Black Cycling Component","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eUpgrade your bike's shifting performance with the SRAM X4 Rear Derailleur - the perfect choice for versatile and reliable 7, 8, and 9-speed drivetrain systems. Engineered for smooth, precise, and effortless gear changes, this long cage derailleur enhances your cycling experience across diverse terrains and riding styles.\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\u003eBuilt with durability in mind, the SRAM X4 features an alloy outer link and B-knuckle combined with a high-performance Grilon composite P-knuckle, ensuring resistance to impact and corrosion. The steel\/composite cage with replaceable pulleys offers longevity and ease of maintenance, making it ideal for everyday riding and off-road adventures.\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\u003eDesigned with a 1:1 actuation ratio, the SRAM X4 ensures crisp, light-action shifting with trigger or twist shifters, delivering precise gear control even under load. Its long cage design accommodates larger cogs up to 34T, providing a 45 teeth chain wrap capacity for wide-range gearing setups. The derailleur's large capacity and optimized cage length enable smooth transitions across a broad gear range, enhancing climbing and sprinting efficiency.\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 replaceable pulleys and a robust cage mechanism, the SRAM X4 ensures reliable performance over countless miles. The advanced engineering minimizes chain slap and maximizes shifting accuracy, making it a perfect fit for mountain biking, commuter, or leisure cycling.\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\u003eWith a sleek black finish, the SRAM X4 derailleur matches various bike styles, from mountain bikes to hybrid and city bikes. Its compatibility with 7-, 8-, and 9-speed systems offers versatile upgrades for existing bikes or new builds focused on durability and consistent shifting performance.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003eInnovative \u0026amp; Differentiating Features\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Compatible with SRAM 1:1 actuation ratio for seamless, responsive gear changes\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Long cage design for increased capacity and wide-range gearing\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Steel and composite materials for enhanced durability and lightweight performance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Easy-to-maintain with replaceable pulleys and corrosion-resistant components\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003eSpecifications:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003e- Compatibility: 7, 8, 9-speed systems, 10x1 standard mount\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-17\"\u003e\u003cp\u003e- Largest Cog: 34T, Min Cog: 11T, Capacity: 45T\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-18\"\u003e\u003cp\u003e- Weight: 280g (bare derailleur), 310g with mount\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-19\"\u003e\u003cp\u003e- Color: Black\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-20\"\u003e\u003cp\u003e- Drivetrain Range: 11-34T cassette, 22T max front difference\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-21\"\u003e\u003cp\u003eUpgrade your bike with the SRAM X4 Rear Derailleur for smooth, accurate, and reliable shifting performance tailored to your riding needs. Built to perform mile after mile, it's the ideal component for cyclists seeking durability, versatility, and high-value performance.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eEnhanced shifting precision with SRAM's 1:1 actuation ratio, providing smooth and responsive gear changes for 7, 8, or 9-speed systems. \u003c\/li\u003e\n\u003cli\u003eConstructed with lightweight alloy outer link and B-knuckle, combined with a steel and composite cage, ensuring durability and reduced weight for reliable long-distance riding. \u003c\/li\u003e\n\u003cli\u003eFeatures a long cage design with replaceable pulleys, offering up to 45T chain wrap capacity and compatibility with a wide gear range from 11T to 34T cogs, perfect for mountain biking and adventure rides. \u003c\/li\u003e\n\u003cli\u003eEngineered for top-normal resting position and compatible with standard 10x1 mounts, allowing easy installation on various bicycle frames and versatile use cases from trail riding to gravel adventures. \u003c\/li\u003e\n\u003cli\u003eInnovative materials and precise engineering deliver excellent performance, with a weigh-in of only 280 grams, making it an ideal upgrade for riders seeking durable, high-performance derailleur components with sleek black styling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"Default Title","offer_id":42208445497411,"sku":"RD5951","price":34.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/RD5951.jpg?v=1779349175","url":"https:\/\/365cycles.com\/products\/sram-x4-long-cage-7-speed-rear-derailleur-rd5951-bicycle-rear-derailleur","provider":"365 Cycles","version":"1.0","type":"link"}