Shimano EW-JC304 Di2 SD300 4-Port Junction Box Headlamps Easily disconnect the drink tube

Easily disconnect the drink tube (an auto shut off valve prevents leaking) and remove the reservoir from your pack for convenient refilling

front difference 18T

The Accessory Carabiner Set is ideal for keeping keys together

Polysorbate 60

all-in-one stove and cookware solution features a secure-locking pot/personal eat-and-drink mug with cozy

Shimano EW-JC304 Di2 SD300 4-Port Junction Box Headlamps Easily disconnect the drink tubeThe 2nd generation Di2 e Tube wiring system from Shimano has the SD300 designation. These wires and connectors are thinner than the SD50 generation. if you need to join two wires to one (3 total wires), or two pairs of SD300 wires to create a longer length for both pairs (4 total wires), you will need this EW JC304 Di2 SD300 4 Port Junction Box. This is actually a simple looking dual tube connector with internal ports on both ends of each side that