Shimano EW-JC304 Di2 SD300 4-Port Junction Box Synthetic Insert the Grill Burner into

Insert the Grill Burner into any IGT frame or use as a freestanding grill

Supports multiple hand positions for ultimate comfort

Machine-washable pillow cover options offer a clean and cooling feel

Assembled extended length 31

the expected lifetime of a garment

Shimano EW-JC304 Di2 SD300 4-Port Junction Box Synthetic Insert the Grill Burner intoThe 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