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Bulls eMTB 2020 Range Expansion – Copperhead EVO AM 1, 2, 3 Series
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2020 BULLS eBike Innovations – A 180 mm eMTB, a carbon step-through and a Sachs motor with a 650 Wh battery | E-MOUNTAINBIKE Magazine
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Bulls E-Bike Review - Bulls Electric Mountain Bikes
Red Bull Rampage 2022: Anatomy of the riders' bikes
