As we walk the pits at some of the largest races in the world, one of the most impressive things about the pro’s road bikes isn’t the new tech or next-model-year frames. It’s the complete and utter lack of friction or drag in their drivetrains. Sure, they have mechanics to clean and lube everything nightly, but at the heart of it all are a complete ensemble of premium rolling stock on anything that rotates.
Now, BBinfinite has two of the four covered…wheels and pedals being the exception. We’ve shown you and reviewed their one-piece bottom brackets, which ensure perfect alignment between left and right bearings to completely eliminate any binding. They’re amazing, and worth checking out as a first step. The second product are these new Delrin road derailleur pulley wheels, which pair the low friction composite material with CeramiTech hybrid ceramic bearings for what they claim is a noticeable gain in speed…
The first third of the video demonstrates how smooth they roll compared to stock Shimano Dura-Ace parts, the remainder covers installation procedure (but is somewhat entertaining if you have another couple minutes to kill).
The pulleys use a Delrin composite body, which glides more smoothly in and out of the chain’s links than alloy pulley wheels, and should cause less overall wear on the system, too. They’re available in seven colors and retail for $120. They’re drivetrain brand specific, with options for Shimano, SRAM and Campagnolo available.