Shimano EW-JC304 Di2 Junction Box with 4 Ports for E-Tube Electronics Brand_Delta Incorporating seamless toe construction

Incorporating seamless toe construction

Optimize your stand-up paddleboarding experience with the Seattle Sports Reflex SUP Leash

and avid riders seeking advanced technology and innovative features

especially with modern wide tires

allowing unrestricted movement during intense activities

Shimano EW-JC304 Di2 Junction Box with 4 Ports for E-Tube Electronics Brand_Delta Incorporating seamless toe constructionShimano Di2 Frame Junction Box Frame Junction Box connects via SD50 E tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com