The Tiagra cassette’s ratios are reported to be 11, 13, 15, 17, 19, 21, 23, 25, 28, 32 and 36 teeth. For 105, the equivalent 12-speed cassette has 11, 12, 13, 14, 15, 17, 19, 21, 24, 28, 32 and ...

Tiagra is now Shimano’s #2 mechanical option behind 105. Here’s what R4000 includes, what it costs, and who it leaves behind.

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 ...

Shimano has released details of its all new 105 groupset. Revamped for 2014/15, the drivetrain is now 11-speed, with all components gaining trickle down technology from the company's existing Ultegra ...

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 ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. You can trust Cyclingnews Our experts spend countless hours testing cycling tech and will always ...

Shimano 105, the component giant's renowned third-tier road group, is undergoing possibly its greatest revamp yet, switching from mechanical to electronic and adding a 12th cog to the cassette for ...

PEZ readers may remember my Colnago V3 project bike with Ultegra R8000: “The shifting is light, crisp, and sure. Dura Ace is supposed to be better, but I’m not ...

40 years is a long time in technological terms. The first mobile phone was released just shy of 40 years ago, and the distance between the first powered flight and the moon landings was a mere 66 ...