Shimano Dura-Ace FC-R9200 12-Speed Chainring - 50t, Asymmetric 110 BCD, Black, NK Road/Track & Cross Cranksets This is a performance upgrade

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

Manufacturer Part Number: CS4TRA-108

hardpacked terrain

Manufacturer Part Number: M-177 HT 480MM

Manufacturer Part Number: 52897

Shimano Dura-Ace FC-R9200 12-Speed Chainring - 50t, Asymmetric 110 BCD, Black, NK Road/Track & Cross Cranksets This is a performance upgradeShimano 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