{"product_id":"shimano-grx-di2-12v-rd-rx825-rear-derailleur-1","title":"Shimano GRX Di2 12v RD-RX825 rear derailleur","description":"\u003cp\u003eSHIMANO's 12-speed GRX Di2 rear derailleur features integrated wireless connectivity units and charging port, ensuring fast and reliable gear changes on mixed terrain, and easy charging. Built-in SHADOW RD+ technology eliminates chain noise and ensures precise gear changes even on rough terrain. With a built-in ON\/OFF switch, wheel removal is also simplified. The RD-RX825 rear derailleur is compatible with 11-34D and 11-36D 12v cassettes and supports fully or partially synchronized shifting modes for greater customization to individual needs.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cbr\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFast and reliable gear shifts on rough surfaces\u003c\/li\u003e\n\u003cli\u003eAdjustable stabilizer eliminates chain noise\u003c\/li\u003e\n\u003cli\u003eSHIMANO SHADOW RD+\u003c\/li\u003e\n\u003cli\u003eClutch tension adjusted specifically for Gravel\u003c\/li\u003e\n\u003cli\u003eStabilizer ON\/OFF switch for terrain matching: ON for Gravel, OFF for smooth surfaces\u003c\/li\u003e\n\u003cli\u003eLED status indicator\u003c\/li\u003e\n\u003cli\u003eBattery indicator, matching, adjustment mode, etc.\u003c\/li\u003e\n\u003cli\u003eSmallest sprocket: Max. 11D\/Min. 11D\u003c\/li\u003e\n\u003cli\u003eLargest sprocket: Max. 36D\/Min. 34D\u003c\/li\u003e\n\u003cli\u003eTotal capacity: 40D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cbr\u003eTech spec\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSeries: GRX\u003c\/li\u003e\n\u003cli\u003eSprockets: 12\u003c\/li\u003e\n\u003cli\u003eRD Structure: SHIMANO SHADOW RD+ ✔\u003c\/li\u003e\n\u003cli\u003eMounting: Direct mount (conventional) ✔\u003c\/li\u003e\n\u003cli\u003eDirect mount: ✔\u003c\/li\u003e\n\u003cli\u003eFront max differential: 17D\u003c\/li\u003e\n\u003cli\u003eTotal capacity: 40D\u003c\/li\u003e\n\u003cli\u003eMin sprocket: 36-34 D\u003c\/li\u003e\n\u003cli\u003eMax sprocket: 11D\u003c\/li\u003e\n\u003cli\u003eFluoro-coated bushings: 4\u003c\/li\u003e\n\u003cli\u003eCable guide pulley: Sealed bearing\u003c\/li\u003e\n\u003cli\u003ePulley bearing T: Sealed bearing\u003c\/li\u003e\n\u003cli\u003eTeeth: 11\/13D\u003c\/li\u003e\n\u003cli\u003eRecessed pulley pin: ✔\u003c\/li\u003e\n\u003cli\u003eRetaining axle: Hollow axle ✔\u003c\/li\u003e\n\u003cli\u003eRetaining axle 2: Hollow axle ✔\u003c\/li\u003e\n\u003cli\u003eWired Di2 connectivity: ✔\u003c\/li\u003e\n\u003cli\u003eWireless Di2 connectivity:  ✔\u003c\/li\u003e\n\u003cli\u003eAdjustment mode information:✔\u003c\/li\u003e\n\u003cli\u003eDI2 battery level: ✔\u003c\/li\u003e\n\u003cli\u003eSelected ratio: ✔\u003c\/li\u003e\n\u003cli\u003eSHIMANO E-BIKE SYSTEMS data items: ✔\u003c\/li\u003e\n\u003cli\u003eCompatible with E-TUBE RIDE: ✔\u003c\/li\u003e\n\u003cli\u003eCompatible with E-TUBE PROJECT: ✔\u003c\/li\u003e\n\u003cli\u003eAdjustment mode information: ✔\u003c\/li\u003e\n\u003cli\u003eBattery charge level DI2: ✔\u003c\/li\u003e\n\u003cli\u003eSelected ratio: ✔\u003c\/li\u003e\n\u003cli\u003eSHIMANO E-BIKE SYSTEMS data items: ✔\u003c\/li\u003e\n\u003cli\u003eFirmware updated by E-TUBE PROJECT: ✔\u003c\/li\u003e\n\u003cli\u003eSD50 port: 0 pcs\u003c\/li\u003e\n\u003cli\u003eSD300 port: 1 pc\u003c\/li\u003e\n\u003cli\u003eSD50 connector: 0 pcs\u003c\/li\u003e\n\u003cli\u003eSD300 connector: 0 pcs\u003c\/li\u003e\n\u003cli\u003eLED for system status: ✔\u003c\/li\u003e\n\u003cli\u003eCharging cable: EW-EC300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":48058352304369,"sku":"IRDRX825A","price":358.08,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1580\/4145\/files\/zm_20250716-102113.jpg?v=1776532357","url":"https:\/\/novasportsbikes.com\/products\/shimano-grx-di2-12v-rd-rx825-rear-derailleur-1","provider":"Nova Sports Bikes","version":"1.0","type":"link"}