{"product_id":"sram-s1000-eagle-transmission-axs-derailleur-12-speed-max-52t","title":"SRAM S1000 Eagle Transmission AXS Derailleur — 12-Speed, Max 52T","description":"\u003cp\u003e\u003cstrong\u003eNo hanger. No limit screws. No adjustment to knock out.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Rival XPLR AXS rear derailleur bolts directly through the frame using a Full Mount interface — there's no derailleur hanger between the frame and the derailleur, which removes the single most common cause of bad shifting.\u003c\/p\u003e\n\n\u003cp\u003e13-speed, 1x, built around the 10-46T XPLR cassette.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eWhat hangerless actually solves\u003c\/h4\u003e\n\n\u003cp\u003eA derailleur hanger is a deliberately soft piece of aluminum designed to bend before your frame does. That's a good idea in a crash and a bad one everywhere else, because a hanger bends a little every time the bike falls over, gets packed in a case, or takes a rock — and a hanger that's a degree out of true makes a perfectly good drivetrain shift badly.\u003c\/p\u003e\n\n\u003cp\u003eFull Mount deletes it. The derailleur clamps directly around the rear axle, referencing the frame instead of a sacrificial tab. Mud, rock strikes, a bike that shifted in the back of the truck, an airline baggage handler who didn't read the sticker — none of it moves this derailleur out of alignment.\u003c\/p\u003e\n\n\u003cp\u003eSetup follows from that. \u003cstrong\u003eThere are no limit screws.\u003c\/strong\u003e The derailleur knows where the cassette is because the mounting interface guarantees it. You install it, follow the procedure once, and it's done.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eChain management\u003c\/h4\u003e\n\n\u003cp\u003eAn MTB-derived spring clutch holds the cage against chain slap. Gravel is where this matters most — washboard, braking bumps, and rock gardens are exactly the inputs that throw a chain on a 1x drivetrain with a big cassette.\u003c\/p\u003e\n\n\u003cp\u003eThe clutch is strong enough to keep the chain settled and quiet, tuned so it doesn't add drag that fights you climbing the cassette.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eRebuildable\u003c\/h4\u003e\n\n\u003cp\u003eThe high-wear parts are replaceable rather than sealed in. Pulley wheels, cage, and hardware are available as individual service parts, so a crash or a season of grit doesn't turn into a new derailleur.\u003c\/p\u003e\n\n\u003cp\u003eOn a component that lives six inches off the ground and takes hits for a living, that's worth more than the grams it costs.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eCassette compatibility — one option only\u003c\/h4\u003e\n\n\u003cp\u003eThis is a \u003cstrong\u003e13-speed\u003c\/strong\u003e derailleur built for one cassette: the \u003cstrong\u003e10-46T XPLR 13-speed.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt will not work with a 12-speed cassette. It will not work with a 10-36 road cassette. There's no adjustment or firmware setting that changes this — the derailleur has 13 positions and indexes to 13-speed cog spacing.\u003c\/p\u003e\n\n\u003cp\u003eIf you're running 12-speed and want to stay there, you want the standard Rival AXS rear derailleur instead, which handles 10-28 through 10-36.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eWhich crankset to pair — measure your chainstays\u003c\/h4\u003e\n\n\u003cp\u003eSRAM's compatibility rule here is based on chainstay length, because chainstay length determines what chainline your bike needs.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainstays 415mm and longer:\u003c\/strong\u003e use an XPLR crankset with a 47.5mm Wide chainline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainstays 414mm and shorter:\u003c\/strong\u003e use a road crankset with a 45mm chainline\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eMost dedicated gravel frames sit at 415mm or longer and want the Wide crank. Shorter-chainstay all-road and road frames want the road crank. Your frame manufacturer publishes chainstay length in the geometry chart — check it before you buy a crankset to go with this.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eYour frame needs UDH\u003c\/h4\u003e\n\n\u003cp\u003eFull Mount derailleurs attach through a UDH-standard dropout. If your frame uses a conventional replaceable hanger of any other pattern, this derailleur will not fit it.\u003c\/p\u003e\n\n\u003cp\u003eUDH has become close to universal on new gravel and mountain frames, but it's worth confirming rather than assuming — check your frame's spec sheet or look at whether your current hanger matches the UDH shape.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eHow eTap shifting works\u003c\/h4\u003e\n\n\u003cp\u003eOn a 1x drivetrain the logic is as simple as it gets:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRight paddle\u003c\/strong\u003e — harder gear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeft paddle\u003c\/strong\u003e — easier gear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNo cable, no housing, no tension to set, no indexing that drifts. The derailleur listens for the lever and moves to a position it already knows.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eAXS app\u003c\/h4\u003e\n\n\u003cp\u003ePair to the SRAM AXS app to check battery level, reassign what each control does, get service reminders, and push firmware updates. Reassigning takes about a minute and means you can set the paddles up however you want them.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eBatteries\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe AXS battery and charger are sold separately.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt's the same rechargeable battery used across the AXS range, so if you've got a spare from another bike it drops straight in. Carrying one in a jersey pocket on long gravel days is cheap insurance — it swaps in about five seconds with no tools.\u003c\/p\u003e\n\n\u003cp\u003eYour shift levers are a separate system running CR2032 coin cells that last years, not rides.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eYou will need a SRAM Flattop chain\u003c\/h4\u003e\n\n\u003cp\u003eSRAM's road and gravel drivetrains use \u003cstrong\u003eFlattop\u003c\/strong\u003e chains, a different design from standard chains. A Shimano chain will not work. A SRAM Eagle chain will not work. A generic 12 or 13-speed chain will not work.\u003c\/p\u003e\n\n\u003cp\u003eCompatible: \u003cstrong\u003eSRAM Road Flattop D1 or Road Flattop E1.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eWhat you'll still need\u003c\/h4\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eA UDH-compatible frame\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA 10-46T XPLR 13-speed cassette\u003c\/strong\u003e — this derailleur works with nothing else\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn XDR driver body\u003c\/strong\u003e on your rear hub, for that cassette\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn AXS battery and charger\u003c\/strong\u003e — not included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSRAM Road Flattop chain\u003c\/strong\u003e, D1 or E1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA crankset matched to your chainstay length\u003c\/strong\u003e — see above\u003c\/li\u003e\n\u003cli\u003eAXS shift-brake levers or controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeeds:\u003c\/strong\u003e 13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain:\u003c\/strong\u003e 1x only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCassette:\u003c\/strong\u003e 10-46T XPLR 13-speed only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Full Mount, hangerless — requires a UDH frame\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankset:\u003c\/strong\u003e XPLR 47.5mm chainline for chainstays 415mm+, road 45mm chainline for 414mm and under\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain:\u003c\/strong\u003e SRAM Road Flattop D1 or Road Flattop E1 only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with\u003c\/strong\u003e 12-speed cassettes, standard derailleur hangers, mechanical drivetrains, Shimano, or Campagnolo\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e RD-RIV-1E-E1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 00.7518.187.000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeeds:\u003c\/strong\u003e 13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax cog:\u003c\/strong\u003e 46T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain configuration:\u003c\/strong\u003e 1x\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting interface:\u003c\/strong\u003e Full Mount, hangerless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShift technology:\u003c\/strong\u003e Wireless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocol:\u003c\/strong\u003e AXS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain management:\u003c\/strong\u003e Spring clutch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCage material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley bearings:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black \/ Grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain technology:\u003c\/strong\u003e Road Flattop D1, Road Flattop E1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceability:\u003c\/strong\u003e Replaceable and rebuildable parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eInstallation\u003c\/h4\u003e\n\n\u003cp\u003eRemove your UDH hanger — the derailleur replaces it entirely and clamps around the axle. Follow SRAM's setup sequence exactly; there are no limit screws to fall back on if you improvise, and the procedure is short precisely because the interface does the work.\u003c\/p\u003e\n\n\u003cp\u003eInstall the battery and press the AXS button to pair. About a minute, no app required.\u003c\/p\u003e\n\n\u003cp\u003eFull documentation and torque values are available in \u003ca href=\"https:\/\/www.sram.com\/en\/service\/models\/rd-riv-1e-e1\" target=\"_blank\" rel=\"noopener\"\u003eSRAM's service hub for this model\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch4\u003eOE product information\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eNot intended for retail sale.\u003c\/strong\u003e This is original-equipment product supplied for dealer service, warranty replacement, and complete-bike build applications.\u003c\/p\u003e\n\n\u003cp\u003eOE product is the same component that ships on complete bikes — identical specification, identical performance. What differs is how it's supplied:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003ePlain bulk or poly packaging rather than a retail box\u003c\/li\u003e\n\u003cli\u003eNo printed manuals or quick-start guides — all documentation is available free from SRAM's service hub, linked above\u003c\/li\u003e\n\u003cli\u003eNo retail hang tags or display materials\u003c\/li\u003e\n\u003cli\u003eSmall-parts and hardware content may differ from the retail pack\u003c\/li\u003e\n\u003cli\u003eComponents may show minor handling marks from bulk packing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWarranty.\u003c\/strong\u003e SRAM's consumer warranty program does not apply to original-equipment components. Warranty and defect claims on this item are administered by State Bicycle Co. Contact our support team with your order number. Crash damage, wear items, and installation damage are not covered.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003csmall\u003e\u003cem\u003eOriginal equipment service item. Supplied in OE packaging for dealer service, warranty replacement, and complete-bike build applications; not a retail-packaged consumer product and not intended for retail sale. SRAM consumer warranty does not apply to original-equipment components — warranty administration on this item is provided by State Bicycle Co. AXS battery and charger not included. Requires a UDH-compatible frame, a 10-46T XPLR 13-speed cassette, and a SRAM Road Flattop chain. Professional installation recommended. SRAM, Rival, AXS, eTap, XPLR, Full Mount, X-Range, and Flattop are trademarks of SRAM LLC. State Bicycle Co. is not affiliated with or endorsed by SRAM LLC. Specifications subject to change without notice.\u003c\/em\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"SRAM","offers":[{"title":"Default Title","offer_id":44166211960919,"sku":"751503808104","price":440.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0232\/3305\/files\/SRAMS1000EagleTransmissionAXSDerailleur_12-Speed_Max52T-resized.png?v=1786731517","url":"https:\/\/www.statebicycle.com\/products\/sram-s1000-eagle-transmission-axs-derailleur-12-speed-max-52t","provider":"State Bicycle Co.","version":"1.0","type":"link"}