{"product_id":"shimano-grx-di2-rd-rx825-rear-derailleur","title":"Shimano GRX DI2 RD-RX825 Rear Derailleur","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eShimano rear derailleur for the named series — the chain-routing mechanism that sets precision, speed-count compatibility, and (on GRX \/ MTB models) chain-retention over rough ground. Matched-series pairing with shifters, cassette and chain is what delivers the in-spec shift-feel Shimano is known for. GRX is Shimano's gravel \/ adventure groupset — clutch-equipped derailleurs, wider-range gearing, ergonomics tuned for on \/ off-road riding and hood-level grip on rough surfaces. This is the Shimano GRX DI2 RD-RX825 Rear Derailleur.\u003c\/p\u003e\u003ch3\u003eDetails\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e\u003cbr\u003eShimano Di2 \/ mechanical RD replacement\u003cbr\u003enew-build spec on a matched groupset\u003cbr\u003eupgrade from older series to current generation\u003cbr\u003ereplacement after crash damage\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003eShimano Shadow \/ Shadow+ low-profile cage on MTB \/ GRX models\u003cbr\u003eElectronic (Di2) or mechanical shifting — see title\u003cbr\u003eClutched cage on gravel \/ MTB models\u003cbr\u003eMatched-series cassette range compatibility\u003c\/p\u003e\u003ch3\u003eInstallation \u0026amp; Care\u003c\/h3\u003e\u003cp\u003eInstall to Shimano spec, set B-tension screw per the gauge provided, cable tension or Di2 adjust per the manual. Matched-series chain and cassette required for in-spec shifting. Clean cage and pulleys at chain-service intervals.\u003c\/p\u003e\u003ch3\u003eBundle \u0026amp; Save\u003c\/h3\u003e\u003cp\u003eBuild a bundle and save up to 15% off.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.enroute.cc\/bundles\"\u003eShop Bundle Builder\u003c\/a\u003e\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":45670883950840,"sku":"IRDRX825A","price":209.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/6373\/4429\/files\/PDPFormattingCopy_44.png?v=1775595425","url":"https:\/\/checkout.enroute.cc\/en-gb\/products\/shimano-grx-di2-rd-rx825-rear-derailleur","provider":"enroute.cc","version":"1.0","type":"link"}