I installed this whole group set onto my Motobecane Boris X7 with a BBSHD 52V motor. I had some issues with the original derailleur bending and eventually had it get wrapped up in the cassette on a double-shift. Not cool. Not only does the cassette bring strength, but the whole drive line is strong. Shifting into faster or slower gears while under pedal assist is seamless. Every gear is narrow-wide, and the cassette shifts through the gears without slippage or noise. I do have 600 miles on this new drive line. I ride 40 miles a day to work and back, and I can now do that without worries. Very impressed with this oddball drive line from SRAM, and just in time, too. Bent hangers and poor shifting with my original equipment had almost left me with buyers remorse for an electronic commuter. I do recommend that an aftermarket forged derailleur hanger gets installed with this group set. Lots of torque is generated with 1500 watts of energy! Any added strength is a good idea.Read full review
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