{"product_id":"st-r4020-tiagra-mechanical-shift-hydraulic-sti-lever-11-speed-175si","title":"ST-R4020 Tiagra mechanical shift hydraulic STI lever, 11-speed","description":"\u003ch2\u003eShimano ST-R4020 Tiagra mechanical shift hydraulic STI lever \u003c\/h2\u003e\n\n\u003cp\u003eExperience precise shifting and confident braking with the Shimano Tiagra ST-R4020 left-hand hydraulic disc brake and shift lever. Its slim, ergonomic design fits naturally in your hand, while the short shift arc allows rapid and accurate 2-speed gear changes with minimal effort. The hydraulic brake lever delivers powerful, controllable stopping performance, especially from the hood position, and the auto-adjusting reservoir maintains consistent pad-to-rotor clearance as pads wear. With tuneable reach adjusters and an easy-to-bleed hydraulic system using Shimano mineral oil, this lever provides reliable performance and smooth operation. Compatible with 11-speed chains and RD-R4000 or RD-U6040 rear derailleurs, it’s a smart upgrade for riders seeking efficiency, comfort, and dependable braking.\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Right Lever\/Front Caliper \/ Black","offer_id":54293266170202,"sku":"2013717","price":155.0,"currency_code":"GBP","in_stock":true},{"title":"Left Lever\/Rear Caliper \/ Black","offer_id":54293266202970,"sku":"2013716","price":155.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/0827\/5290\/files\/Shimano-ST-R4020-Tiagra-mechanical-shift-hydraulic-STI-lever-11-speed-Black.jpg?v=1781187924","url":"https:\/\/checkout.sigmasports.com\/products\/st-r4020-tiagra-mechanical-shift-hydraulic-sti-lever-11-speed-175si","provider":"Sigma Sports","version":"1.0","type":"link"}