
28" Step-Through Electric Bike for Adults
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The CrazyBird R3 is a 28-inch step-through electric bike built around a 52V system with a torque sensor, so pedal assist responds to how hard you push rather than just how fast you spin. The low-step frame gives an upright, relaxed riding position, and it comes with fenders, a heavy-duty rear rack and hydraulic disc brakes. It uses named components — Bafang, Shimano, Kenda and Selle Royal — and ships 95% assembled. It suits riders who want easy mounting, hill capability and cargo capacity more than a sporty, aggressive ride.
In stockSold by crazybird e-bikeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
The CrazyBird R3 is a 28-inch step-through electric bike for adults. It has a 52V high-voltage system for climbing hills. A torque sensor adjusts the motor boost to the effort you put into the pedals, so the assist is smooth and quiet.
The low-step frame makes it easy to get on and off. It also gives a more relaxed, upright riding posture. Integrated fenders protect against mud and debris, and a heavy-duty rear rack carries gear.
The bike uses Bafang, Shimano, Kenda and Selle Royal components and has hydraulic brakes. It arrives 95% pre-assembled. You install the pedals and adjust the handlebars before riding.







