Drivetrains, aero tweaks, and wheels have emerged as the sweet spot for where listeners can achieve marginal gains on their current bike setups, and this episode will really scratch that itch. We do a deep dive into the why, how, and what of Silca's new diamond-polished chains, how properly-lubed chains affect cog and chainring wear and tear, and whether you really need to replace that quick link after each chain connect/disconnect cycle. We also get to the best ways to locate your hydration on long rides and the question of whether — wheelwise — deeper is always better.