Jockey wheels … I am struggling to understand the price difference and what it may mean. Whats wrong with the ones for a quid?
The cheaper ones won’t have ceramic bearings, whereas the pricier ones should. I heard that Shimano 105 jockey wheels, which are non-ceramic, waste an entire Watt compared to Ultegra ones. The latter are ceramic.
Plus, the premium jockey wheels will likely be lighter. Think of the weight saving!
NB: I’m not a mechanic, so take my word with a pinch of Silca salt.