What if 105 Di2 R7100 road & Deore Di2 M6200 mountain had a baby, that grew up to rebel and ride gravel roads?

Professional cycling has, in its recent history, been prone to a shocking variety of cheating methods and dirty tricks. Performance-enhancing drugs. Tacks strewn on race courses. Even stealthy motors ...

Shimano’s long-awaited wireless XTR Di2 groupset is here. We test the upgrade kit to see if it upholds the brand’s reputation for fast, smooth shifting. In June 2025 Shimano unveiled what many of us ...

Earlence Fernandes is a computer science professor at UC San Diego. He’s also a cycling geek. He stands next to his bike at UCSD’s computer science building and tells how he commutes to work on his ...

More riders than ever are using electronic shifting drivetrains for road and gravel as the technology trickles down to lower-priced groups and bicycles. And a big benefit of electronic shifting ...

I'm excited by a more affordable 1x GRX Di2, but why isn’t the bike industry? I asked some of the leading bike brands ...

When I first saw a bike shod with the original Shimano Dura-Ace Di2 in the flesh, I scoffed. I thought it was an answer searching for a problem and predicted in a few short years it would go the same ...

Ok, let's get this out of the way first: We don't usually (or ever) review groupsets. There are a few reasons for this--availability, novelty, and (quite frankly) interest. Also, not a ton of ...