– Allows the use of Dura Ace 2x chainrings with 5Dev 8-bolt cranks
– Chainring Bolt Pattern: Shimano 4 Bolt 110BCD for Dura Ace 2X Chainrings (will not work with Ultegra). Please note that this spider is cut to work exclusively with Dura Ace 2X Chainrings
– CNC machined in San Diego
– 73g








