Shimano Dura-Ace FC-R9200 12-Speed Chainring - 50t, Asymmetric 110 BCD, Black, NK Road/Track & Cross Cranksets Manufacturer Part Number: M-177 HT

Manufacturer Part Number: M-177 HT 480MM

Manufacturer Part Number: HBK408

This is a performance upgrade to the SoloAir as well in addition to reducing the risk of broken wave springs in some older air piston designs

Twist shifting at its best and highest performance

Shimano Dura-Ace FC-R9200 12-Speed Chainring - 50t, Asymmetric 110 BCD, Black, NK Road/Track & Cross Cranksets Manufacturer Part Number: M-177 HTShimano Dura Ace FC R9200 chainrings are constructed with high quality aluminum and are compatible with FC R9200 and FC 9200 P 2x 12 speed cranksets. Asymmetric 110 BCD Compatible with HG 12 speed chains Product Specifics Color: Black Ring Position Type: Outer Tooth Count: 50 Round or Oval: Round Drivetrain Speeds: 12 Chainring BCD: 110 Shimano Asymmetric Material: Aluminum Defined Color: Black Today's Stock Status 10 Available to ship in 2 4 Business