Gravel bikes were once the rebels of the drop-bar bike world, but now that they’ve gone increasingly mainstream, it’s perhaps inevitable that they’d adopt features from road racing: aero shapes, hidden cabling, similar claims about weight and stiffness, and so on.

Is this a good thing? Also making a possible comeback are solid molded carbon fiber wheels — and they’re not just for fixies, kids. And what do we think you should bring with you on an unsupported 4,700 km ride? You’ll get all that and more in this week’s round of Ask a Mechanic.