Mountain Bike Action Bike Test: Bulls Copperhead EVO AM 4 Trail Bike
Both traditional and electric, Bulls offers a bigger variety of bikes in Europe than in the U.S., so the U.S. side is picky about what they bring in. On the traditional mountain bike side, in the past they’ve offered a hardtail called the Copperhead. This year they’re offering a full-suspension electric-assist mountain bike line called the Copperhead EVO AM series.
Bulls started with a 6061 aluminum frame with the battery integrated into the downtube. It’s a pretty conventional front and rear triangle combo. The sloping top tube is not low enough to make it a step-thru by any means, but it curves slightly at the bottom to level off, giving you plenty of stand-over clearance. There’s still room in the front triangle for a bottle cage, though likely you’ll use their side-mounting bottle for it.
One cool and fairly unique feature on the Copperhead is the Monkeylink receiver on the stem and at the seatpost clamp. These are magnetic, pre-wired receivers for lights, so you can run them only at night or leave them on full-time. Lights are sold separately. We got a set, and they’re compact and…