Shimano EW-SD300-I Electric Wire Di2 700mm Built in Routing GiantAprSale The EX1 drive train was

The EX1 drive train was designed specifically for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears and sturdy components to handle higher torque loads

Minimum Tire Size 27mm

but it also contemporizes the look of your super bike

keeping you cool during intense rides

Shimano EW-SD300-I Electric Wire Di2 700mm Built in Routing GiantAprSale The EX1 drive train wasThe Shimano SD300 Di2 Electric Wire is designed for use with Shimano Di2 and STePS electronic shifting. It has been specifically designed for external routing on Shimano E Tube systems. With an updated design, the SD300 Di2 Electric Wire has a reduced cable diameter saving both space and weight without affecting efficiency. Specifications Model: SD300Cable Length: 700mmType: External routingCompatible Systems: Shimano E Tube System (Di2 and STePS)Cord