Promax 4-Bolt Chainring - 44t 104 BCD Black CheckoutSpec=2-P }Ritchey WCS 1-Bolt Seatpost Saddle

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}Shimano GRX FC-RX810-2 Crankset - 170mm 11-Speed 48/31t 110/80 BCD Hollowtech II Spindle Interface Black

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Promax 4-Bolt Chainring - 44t 104 BCD Black CheckoutSpec=2-P }Ritchey WCS 1-Bolt Seatpost SaddlePromax 4 Bolt Chainring 44t 104 BCD Black. Machined from high end aluminum Promax 4 bolt 104 BCD chainrings are designed to handle the torque and stress of modern BMX racing and are fully capable in other single speed applications. CNC Machined from high grade 6061 T6 series aluminum for high strength while providing weight savings Designed to be used with most cranksets and spiders that utilize a 4 bolt 104 BCD chainring TECH SPECS Color Black Ring