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Kogel Kolossos Oversized Derailleur Cage:
$250.00
Kogel Kolossos Oversized Derailleur Cage. Shimano's RX800 and RX810 represent top-tier, Ultegra-equivalent tiers for mixed-surface and gravel riding, where the RX800 label often references earlier clutch-based components or the broader tier family, while RX810 designates the dedicated mechanical 11-speed generation of the official Shimano GRX lineup.
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