{"product_id":"shimano-xt-rd-m8120-12s-rear-derailleur-sgs","title":"Shimano XT RD-M8120 12s Rear Derailleur SGS","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano XT RD-M8120 12s Rear Derailleur SGS\u003c\/strong\u003e sits at the heart of Shimano's 12-speed 2x mountain drivetrain — built from aluminum and engineered to stay controlled when the trail turns rough. The SGS long cage handles the full spread of a 10-45T cassette, giving you the range you need for steep climbs without sacrificing smoothness at the top end.\u003c\/p\u003e\n\n\u003cp\u003eThe integrated Shadow RD+ stabilizer damps cage movement under load, reducing chain slap and keeping the drivetrain quiet on technical, choppy terrain. Larger 13T sealed-bearing pulleys run with less friction than smaller alternatives, and the cage-mounted bumper adds a layer of impact protection while contributing to faster, more positive shifts. Tension is actively reduced in low gears — a detail that keeps things quiet when you're grinding up a long climb and the chain is under its greatest load.\u003c\/p\u003e\n\n\u003ch3\u003eShimano XT RD-M8120 12s Rear Derailleur SGS — Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 290g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Shimano 12-speed 2x mountain bike system\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax cassette range:\u003c\/strong\u003e 10-45T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePulley:\u003c\/strong\u003e 13T, sealed bearing, SGS long cage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Black","offer_id":43520649789484,"sku":"IRDM8120SGS","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-xt-rd-m8120-12s-rear-derailleur-sgs-3795980.jpg?v=1771297209","url":"https:\/\/ricycles.com\/products\/shimano-xt-rd-m8120-12s-rear-derailleur-sgs","provider":"RA Cycles","version":"1.0","type":"link"}