Shimano GRX FC-RX820-2 Chainring - 48t Outer Ring 110 BCD For 2x 12-Speed BLK CheckoutSpec= (100) 31.6x385mm The chainrings feature a narrow/wide

The chainrings feature a narrow/wide tooth configuration and are designed for 1x10 1x11 and 1x12 speed setups including SRAM Type without the need of a chain guide

Color Black/Reflective Defined Color Black Designed for ebike Yes Flat Protection Tread ISO Diameter 406 / 20" BMX ISO Width (mm) 44 Labeled Size 20 x 1

Measure your running efficiency with insights like stride length long-term volume and step speed loss showing how much you slow down on impact

Compatible with the three most common wheel sizes including 26

Shimano GRX FC-RX820-2 Chainring - 48t Outer Ring 110 BCD For 2x 12-Speed BLK CheckoutSpec= (100) 31.6x385mm The chainrings feature a narrow/wideThese Shimano GRX RX820 2 anodized aluminum chainrings are for specifically designed for use with GRX FC RX820 2 2x 12 speed cranksets. Ring Position Type Outer Tooth Count 48 Drivetrain Speeds 12 Round or Oval Round Chainring BCD 110 Shimano Asymmetric Material Aluminum Color Black Weight 102 Defined Color Black Number of Bolt Holes 4 Bolt