{"product_id":"shimano-di2-m-ew90-a-junction-3-port","title":"SHIMANO Di2 M-EW90-A JUNCTION 3 PORT","description":"\u003ch3\u003eThe Shimano Di2 SM-EW90-A Junction Box is a three-port hub designed for cockpit-mounted electronic shifting systems.\u003c\/h3\u003e\n\u003cp\u003eThis compact junction allows seamless integration of multiple Di2 components in the handlebar area, distributing power and signals efficiently across your drivetrain controls. Perfect for riders building custom cockpit setups, the SM-EW90-A supports clean cable routing and reliable connections between your shifters, front derailleur, and rear derailleur. Its weather-sealed design ensures durability in all conditions, while the intuitive port layout simplifies installation and maintenance. Compatible with Shimano's full Di2 ecosystem, this junction box is essential for modern electronic groupset configurations where space and organisation matter.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SM-EW90-A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e External type\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition: \u003c\/strong\u003eUnder stem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-tube port (pcs): \u003c\/strong\u003e3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-tube connector (pcs):\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster unit:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector for remote sprinter shifter (QTY):\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort for remote sprinter shifter (QTY): \u003c\/strong\u003e0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging port (QTY): \u003c\/strong\u003e1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible system\u003c\/strong\u003e: E-Tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible electric wire:\u003c\/strong\u003e EW-SD50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire routing: \u003c\/strong\u003einternal\/external\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDura Ace Di2 9070\u003c\/li\u003e\n\u003cli\u003eDura Ace Di2 R9150\u003c\/li\u003e\n\u003cli\u003eUltegra Di2 R8050\u003c\/li\u003e\n\u003cli\u003eUltegra Di2 6770\u003c\/li\u003e\n\u003cli\u003eUltegra Di2 6870\u003c\/li\u003e\n\u003cli\u003eXTR Di2 M9050\u003c\/li\u003e\n\u003cli\u003eXT Di2 M8050\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eContents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Shimano Di2 SM-EW90-A Junction 3 Ports \u003c\/li\u003e\n\u003cli\u003e1 x Mounting material\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SHIMANO","offers":[{"title":"Default Title","offer_id":57006957887863,"sku":"SMEW90A","price":99.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/2350\/2370\/files\/ShimanoDi2SM-EW90-AJunction3Ports.jpg?v=1776180962","url":"https:\/\/www.allterraincycles.co.uk\/products\/shimano-di2-m-ew90-a-junction-3-port","provider":"allterraincycles","version":"1.0","type":"link"}