Amazing TITAN carbon fiber derailleur cage concept gets zirconia bearings, sapphire covers
We’ve seen some insane modifications to rear derailleurs before, but they’re mostly the work of artisans and probably not intended for daily use. And there are plenty of boutique machined alloy or carbon caged pulley system upgrades from the likes of Kogel, CeramicSpeed, and even Muc-Off. But this beauty from Topcarbon takes thins to a […]
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