{"product_id":"shimano-dura-ace-di2-st-r9180-br-r9270-disc-brake-right","title":"SHIMANO DURA ACE Di2 ST-R9180 + BR-R9270 DISC BRAKE RIGHT","description":"\u003ch3\u003eThe Shimano Dura Ace Di2 ST-R9180 shift\/brake lever paired with the BR-R9270 disc brake caliper represents the pinnacle of triathlon and time trial performance.\u003c\/h3\u003e\n\u003cp\u003eEngineered for athletes demanding absolute precision, this wireless shifting system delivers uncompromising control and responsiveness when every millisecond counts. The Di2 electronic shifting eliminates cable friction, ensuring instantaneous gear changes with minimal effort—critical during high-intensity efforts where hand fatigue can compromise performance. The clean, minimalist cable routing enhances aerodynamics while reducing mechanical complexity and maintenance demands. The BR-R9270 hydraulic disc brake provides superior modulation and stopping power in all conditions, giving you confidence on technical descents and during aggressive braking zones. Combined with the ergonomic lever design, this setup allows seamless transitions between shifting and braking without repositioning your hands. Purpose-built for endurance racing where consistency and reliability matter most, this left-side unit integrates seamlessly into a complete Dura Ace Di2 groupset for a cohesive, high-performance drivetrain.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFeatures \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptimum power transmitted with firm grip\u003c\/li\u003e\n\u003cli\u003eMore aerodynamic and better grip feeling\u003c\/li\u003e\n\u003cli\u003eSwitch button integrated inside without hand release\u003c\/li\u003e\n\u003cli\u003eIntuitive shifting control\u003c\/li\u003e\n\u003cli\u003eKeep firm grip when shifting\u003c\/li\u003e\n\u003cli\u003eSingle button on each side of the shifting lever only works with SHIMANO SYNCHRONIZED SHIFT\u003c\/li\u003e\n\u003cli\u003eBetter control and confidence in race conditions\u003c\/li\u003e\n\u003cli\u003eCustomizable function to fit in rider’s riding style\u003c\/li\u003e\n\u003cli\u003eEach switch has the option for multi-shift ON or OFF\u003c\/li\u003e\n\u003cli\u003eE-TUBE PROJECT\u003c\/li\u003e\n\u003cli\u003eClean cockpit area\u003c\/li\u003e\n\u003cli\u003eIntegrated E-TUBE cable and internal brake cable routing\u003c\/li\u003e\n\u003cli\u003eNew cable junction (EW-RS910, EW-JC130) available to integrated with bike frame\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse: \u003c\/strong\u003eTriathlon\/TT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup:\u003c\/strong\u003e Dura Ace Di2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel: \u003c\/strong\u003eST-R9180-R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual-Control-Lever\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandlebar mounting:\u003c\/strong\u003e DH Bar right\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear rear: \u003c\/strong\u003e11\/12-speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical gear display:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLever reach adjust:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp band inner diameter:\u003c\/strong\u003e 19.0-22.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake-type:\u003c\/strong\u003e Hydraulic Disc Brake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake caliper:\u003c\/strong\u003e BR-R9270\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake mounting:\u003c\/strong\u003e Flat-Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake pads: \u003c\/strong\u003eL03A Resin with Fin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake hose:\u003c\/strong\u003e SM-BH90-JK-SSR rear 1700mm (shortable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way bleeding: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake fluid:\u003c\/strong\u003e Mineral oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended brake rotor:\u003c\/strong\u003e SM-RT900 (140mm\/160mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible electric wire:\u003c\/strong\u003e EW-SD50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-tube Project:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-tube port (pcs):\u003c\/strong\u003e 1\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterial\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody: \u003c\/strong\u003eCFRP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLever:\u003c\/strong\u003e Carbon, painted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliper:\u003c\/strong\u003e Aluminium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eColour\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeries colour\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eContents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Shimano Dura Ace Di2 ST-R9180 STI Dual Control Lever right\u003c\/li\u003e\n\u003cli\u003e1 x Shimano Dura Ace BR-R9270 Flat-Mount Disc Brake Caliper\u003c\/li\u003e\n\u003cli\u003e1 x Brake Pads L03A-Resin with Fin\u003c\/li\u003e\n\u003cli\u003e1 x Brake Hose SM-BH90-JK-SSR 1700mm (shortable)\u003c\/li\u003e\n\u003cli\u003e2 x Screw for brake caliper 38mm\u003c\/li\u003e\n\u003cli\u003e1 x Tube Joint Kit\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SHIMANO","offers":[{"title":"Default Title","offer_id":56992107954551,"sku":"R91802DRF","price":424.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/2350\/2370\/files\/4550170900236.avif?v=1775666187","url":"https:\/\/www.allterraincycles.co.uk\/products\/shimano-dura-ace-di2-st-r9180-br-r9270-disc-brake-right","provider":"allterraincycles","version":"1.0","type":"link"}