If you were to make a short list of mechanicals that can derail a race, there are a few that immediately come to mind. Chains, brakes and derailleurs are obvious, as are flats and damaged rims.

Product Name: Plastic pulley wheels with bearings online Amazon POM Plastic Pulley Wheels with Bearings for Europe online, Amazon 46.5mm Round Groove Nylon Pulley Wheels Roller Pulley online, Nylon ...

Pro road racers who use Berner's uniquely oversized rear derailleur cages have sworn time and again that they reduce drivetrain friction thanks to their humongous 15-tooth pulleys. Now, Jason Smith of ...

Kogel’s latest round of anodized alloy pulley wheels come in 14-tooth sizes to fit the latest round of Shimano wireless derailleurs. And they come in six colors, letting you cage a little bling while ...

Let’s face it, the cycling industry loves trying to eke out marginal drivetrain efficiency gains with oversized pulley upgrades and ceramic bearings, but these things are incredibly expensive. So, ...