Shimano Ultegra FC-R8100 12-Speed Chainring - 34t Asymmetric 110 BCD BLK NK CheckoutSpec= Champange }Wolf Tooth Direct Mount Chainring

}Wolf Tooth Direct Mount Chainring - 42t SRAM Direct Mount Drop-Stop B For SRAM 8-Bolt Cranksets 6mm Offset Black

Bearing Type Sealed Cartridge Cassette Body Type Shimano Micro Spline Color Black Defined Color Black Hub Drilling 32 Hub/Brake Compatibility Center-Lock Disc Rear Axle 12mm Thru x 148mm Skewer Included No Spoke Interface J-Bend

Surly Ultra New Axle Kits are for upgrading the internals of your existing Surly New hubs or replacing the internals on your Surly Ultra New hubs

Ergonomic soft-plastic TPR handle offers comfort leverage and easy handling

Only compatible with Shimano EP801/EP800/EP600 drive units

Shimano Ultegra FC-R8100 12-Speed Chainring - 34t Asymmetric 110 BCD BLK NK CheckoutSpec= Champange }Wolf Tooth Direct Mount ChainringShimano Ultegra FC R8100 12 Speed Chainring 34t Asymmetric 110 BCD Black NK. Shimano Ultegra FC R8100 chainrings are constructed with high quality aluminum and are compatible with FC R8100 and FC 8100 P 2x 12 speed cranksets. Asymmetric 110 BCD Compatible with HG 12 speed chains TECH SPECS Color BlackRing Position Type InnerTooth Count 34Round or Oval RoundDrivetrain Speeds 12Chainring BCD 110 Shimano AsymmetricMaterial AluminumDefined Color Black