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Amazon.com : Heybike Cityscape Electric Bike 350W Electric City Cruiser Bicycle Up to 40 Miles Removable Battery, 7-Speed and Dual Shock Absorber, 26" Electric Commuter Bike for Adults : Sports & Outdoors
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OKAI Stride Electric Bike w/ 40 Miles Max Operating Range and 25 mph Max Speed Desert Sand EB40-SAND - Best Buy
![I want to run a 54/40 chainring (I live on flat terrain) but I have an ultegra 12 speed. I read that I would need to buy a DuraAce crank and and I want to run a 54/40 chainring (I live on flat terrain) but I have an ultegra 12 speed. I read that I would need to buy a DuraAce crank and and](https://preview.redd.it/i-want-to-run-a-54-40-chainring-i-live-on-flat-terrain-but-v0-gm2vwc9yelgb1.jpg?auto=webp&s=a7535ba2d65ae96080e6fd8b7cb21ede83f858c3)