Shimano SM-JC41 Di2 Internal Junction B Box 4 Port classification-rearshock the Freedom 4-bike hitch rack

the Freedom 4-bike hitch rack has ability to carry just about any style and combination of bicycles out there

Freehub Speed:  6

Pioneer SGY90 Shimano Dura-Ace FC-9000 Single Leg Power Meter Left Crank Arm 165mm

most precise front shifting available

Stan's NoTubes ZTR Crest MK3 RS1 Aluminum Tubeless 29" Front Wheel

Shimano SM-JC41 Di2 Internal Junction B Box 4 Port classification-rearshock the Freedom 4-bike hitch rackFrame 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