Susprisingly heavy; just under 2kg, or 4lbs. 6oz., with a 2S 5000mAh hardcase LiPo. Has no trouble holding a wheelie with a two-pole brushless motor, though. Might be too heavy to race on dirt, but it sticks to pavement well enough that it still traction-rolls on occasion despite having such a low stance.
It doesn't look like it should weigh that much, but the funny thing is, just because it's got a narrow body doesn't mean it's lacking any of the necessary parts to make it run. It's all just packed into a smaller space instead of spread-out on a flat chassis plate. But that's the reason I bought it -- I love the way it looks.