{"product_id":"shimano-rd-r4000-tiagra-11-speed-rear-derailleur-gs-medium-cage","title":"Shimano RD-R4000 Tiagra 11-speed Rear Derailleur GS Medium Cage","description":"\u003cp\u003e\u003cstrong\u003eShimano RD-R4000 Tiagra 11-speed Rear Derailleur GS Medium Cage \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOffering pro-level features, the 11-speed compatible Tiagra rear derailleur gives high performance at a low price\u003c\/p\u003e\n\u003cp\u003eWide link design increases rigidity and service life\u003c\/p\u003e\n\u003cp\u003eAdvanced light action for low-friction shifting up or down the block\u003c\/p\u003e\n\u003cp\u003eAlloy body's and outer link leads to lower weight without compromising strength and durability\u003c\/p\u003e\n\u003cp\u003eTwo fluorine-coated link pin bushings for low-friction performance\u003c\/p\u003e\n\u003cp\u003e36 tooth max cassette with double chainset\u003c\/p\u003e\n\u003cp\u003eCompatible with 11-speed chains, CSRS40011146 and ST-R4020\/ ST-U6030 STI's only\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":48881962090713,"sku":null,"price":58.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0776\/7624\/9305\/files\/Screenshot2026-07-02at20.01.39.png?v=1783020560","url":"https:\/\/sprockets.uk.com\/products\/shimano-rd-r4000-tiagra-11-speed-rear-derailleur-gs-medium-cage","provider":"SprocketsUK","version":"1.0","type":"link"}