{"product_id":"shimano-ew-jc304-di2-junction-box-4-ports-use-with-ew-sd300-1246722","title":"EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300","description":"Shimano Di2 Frame Junction Box\r\u003cbr\u003e\r\u003cbr\u003e- Frame Junction Box connects via EW-SD300 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount\r\u003cbr\u003e- All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions\r\u003cbr\u003e- Use Di2 system checker to update component firmware from http:\/\/e-tubeproject.shimano.com\/","brand":"Shimano","offers":[{"title":"Default Title","offer_id":51706246398185,"sku":"SHI488949660","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/4161\/7129\/files\/shimano-ew-jc304-di2-junction-box-4-ports-use-with-ew-sd300-1246722-1.png?v=1787402879","url":"https:\/\/maklinbikeshop.com\/products\/shimano-ew-jc304-di2-junction-box-4-ports-use-with-ew-sd300-1246722","provider":"Maklin Bike Shop","version":"1.0","type":"link"}