GhostCat GhostCat F4X Review: A 2,200W Moto-Style Electric Bike With a 40+ MPH Top Speed The GhostCat F4X will absolutely climb West Linn's steepest grades, with 160+ Nm of torque and a 2,200W-nominal/3,300W-peak motor — specs that put it well above Oregon's e-bike wattage class.