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This 5DEV spider allows the integration of Shimano Dura-Ace 12-speed rings with their RGXC 8-Bolt crank interface. The asymmetric 110 BCD 4-Bolt chainring bolt pattern works exclusively with Dura-Ace 2x chainrings. Please note that this chainring is not compatible with Ultegra or GRX chainrings. Allows the integration of Shimano Dura-Ace 12-speed rings with the 5DEV RGXC 8-Bolt crank interface CNC'd machined aluminum is lightweight at only 73g Please note - If you want to run Shimano 11-speed Dura-Ace, you'll going to need to use a FC-R9200 12-Speed small ring, otherwise you'll run into compatibility issues
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🇺🇸 Ship from USA · On Agora since 2025
$179.99