{"product_id":"sram-nx-eagle-12-speed-rear-derailleur","title":"SRAM NX Eagle 12-Speed Rear Derailleur Long Cage Black","description":"\u003cp\u003e\u003cstrong\u003eTrail-proven SRAM Eagle 12-speed rear derailleur designed for durability, chain control, and wide-range MTB gearing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe SRAM NX Eagle rear derailleur delivers dependable 12-speed mountain bike shifting performance using SRAM’s proven X-Horizon architecture and Type-3 Roller Bearing Clutch technology. Designed for trail bikes, hardtails, all-mountain builds, and aggressive recreational riding, the NX Eagle derailleur balances durability and smooth drivetrain performance while supporting wide-range Eagle cassette systems.\u003c\/p\u003e\n\n\u003cp\u003eCompatible with both 10-50T and 11-50T Eagle cassettes, the NX Eagle provides climbing-friendly gearing without sacrificing drivetrain simplicity.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Functional Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with SRAM Eagle 12-speed mechanical drivetrains\u003c\/li\u003e\n\u003cli\u003eSupports both 10-50T and 11-50T Eagle cassette ranges\u003c\/li\u003e\n\u003cli\u003eSRAM X-Horizon derailleur geometry improves chain stability and shifting precision\u003c\/li\u003e\n\u003cli\u003eType-3 Roller Bearing Clutch reduces chain slap and improves retention\u003c\/li\u003e\n\u003cli\u003eCage Lock feature simplifies wheel removal and chain installation\u003c\/li\u003e\n\u003cli\u003e14-tooth X-Sync lower pulley improves drivetrain efficiency and chain management\u003c\/li\u003e\n\u003cli\u003eLong cage design optimized for wide-range 1x mountain drivetrains\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cbr\u003e\n\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: NX Eagle\u003c\/li\u003e\n\u003cli\u003eSpeed Compatibility: 12-Speed\u003c\/li\u003e\n\u003cli\u003eMaximum Cassette Cog: 50T\u003c\/li\u003e\n\u003cli\u003eCage Length: Long Cage\u003c\/li\u003e\n\u003cli\u003eShift Ratio: SRAM 1:1\u003c\/li\u003e\n\u003cli\u003eShift Type: Mechanical\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003cli\u003eTechnology: X-Horizon, Type-3 Roller Bearing Clutch, X-Sync Pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cbr\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Technical Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible only with SRAM Eagle 12-speed mechanical drivetrain systems.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eWorks with SRAM SX, NX, GX, X01, and XX1 Eagle mechanical shifters\u003c\/li\u003e\n\u003cli\u003eCompatible with Eagle 10-50T and 11-50T cassette ranges\u003c\/li\u003e\n\u003cli\u003eNot compatible with SRAM Transmission T-Type systems\u003c\/li\u003e\n\u003cli\u003eNot compatible with Shimano 12-speed drivetrains\u003c\/li\u003e\n\u003cli\u003eRequires proper Eagle chain and cassette compatibility\u003c\/li\u003e\n\u003cli\u003ePrecise derailleur hanger alignment is critical for accurate 12-speed shifting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cbr\u003e\n\n\u003cp\u003e\u003cstrong\u003eService \/ Ownership Context\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent replacement for damaged or worn Eagle drivetrain derailleurs\u003c\/li\u003e\n\u003cli\u003eRoller Bearing Clutch improves chain stability on rough terrain\u003c\/li\u003e\n\u003cli\u003e12-speed systems require careful setup and cable adjustment\u003c\/li\u003e\n\u003cli\u003eChain wear monitoring is important to preserve expensive Eagle cassettes\u003c\/li\u003e\n\u003cli\u003eCage Lock simplifies maintenance and wheel removal during flat repairs\u003c\/li\u003e\n\u003cli\u003ePopular upgrade from older 11-speed MTB drivetrains\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cbr\u003e\n\n\u003cp\u003e\u003cstrong\u003eFit \u0026amp; Use Signals\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood Fit:\u003c\/strong\u003e SRAM Eagle mechanical MTB drivetrains, trail bikes, hardtails, all-mountain builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot A Fit:\u003c\/strong\u003e Shimano drivetrains, SRAM T-Type Transmission systems, road\/gravel AXS systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e MTB drivetrain replacement, Eagle upgrades, trail bike repairs, wide-range 1x setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv data-ai=\"mechanic-insight\" style=\"display:none\"\u003e\n\u003cstrong\u003e1. Real Mechanic Insights\u003c\/strong\u003e\n- NX Eagle is often considered the durability sweet spot before moving into lighter premium Eagle groups\n- Most poor 12-speed shifting problems come from bent derailleur hangers, not the derailleur itself\n- The clutch system significantly improves chain retention on rough terrain\n- Customers frequently confuse Eagle mechanical drivetrains with newer T-Type Transmission systems\n- Worn chains destroy Eagle cassette teeth quickly if replacement intervals are ignored\n\n\u003cstrong\u003e2. Typical Customer Searches\u003c\/strong\u003e\n- “SRAM NX Eagle derailleur”\n- “12 speed MTB derailleur”\n- “SRAM Eagle rear derailleur”\n- “replacement Eagle derailleur”\n- “NX Eagle 12 speed”\n\n\u003cstrong\u003e3. Often Replacing\u003c\/strong\u003e\n- Crash-damaged derailleurs\n- Bent derailleur cages\n- Older 11-speed MTB drivetrains upgrading to Eagle\n- Worn OEM SX Eagle derailleurs\n\n\u003cstrong\u003e4. Good Fit \/ Not A Fit\u003c\/strong\u003e\n- Good Fit: SRAM Eagle mechanical MTB setups using 10-50T or 11-50T cassettes\n- Not A Fit: SRAM Transmission T-Type systems, Shimano drivetrains, road AXS systems\n\n\u003cstrong\u003e5. Recommended Shop Pairings\u003c\/strong\u003e\n- SRAM Eagle chain replacement\n- Derailleur hanger alignment service\n- Eagle cassette inspection\n- Shift cable and housing replacement\n- Drivetrain tuning service\n\n\u003cstrong\u003e6. What Customers Compare This To\u003c\/strong\u003e\n- SRAM SX Eagle derailleur\n- SRAM GX Eagle derailleur\n- Shimano Deore 12-speed derailleur\n- Shimano SLX 12-speed systems\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"Default Title","offer_id":53464236359994,"sku":"GG-DER-SRAM-NXEAGLE-12S-LONG","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5735\/8394\/files\/250373.jpg?v=1778970578","url":"https:\/\/gograva.com\/products\/sram-nx-eagle-12-speed-rear-derailleur","provider":"Grava Adventure Corporation","version":"1.0","type":"link"}