Shimano Dura-Ace FC-R9200 12-Speed Chainring - 40t Asymmetric 110 BCD BLK NJ CheckoutSpec= Bosch Gen 4 Easy On-Ramp profile allows for

Easy On-Ramp profile allows for a smooth tire installation and stress- free inflation

Teeth 42 Pedals Thread 9/16 BB Inclusion No BCD Direct Mount Speed 12 Crank Spindle Diameter 28

Elliptical design offers more power better traction and less shifting

5 Bag Material Deniers Ripstop Nylon Volume 0

Replaceable CR2032 3V battery

Shimano Dura-Ace FC-R9200 12-Speed Chainring - 40t Asymmetric 110 BCD BLK NJ CheckoutSpec= Bosch Gen 4 Easy On-Ramp profile allows forShimano Dura Ace FC R9200 12 Speed Chainring 40t Asymmetric 110 BCD Black NJ. Shimano 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 TECH SPECS Color BlackRing Position Type InnerTooth Count 40Round or Oval RoundDrivetrain Speeds 12Chainring BCD 110 Shimano AsymmetricMaterial AluminumDefined Color Black