SRAM RED AXS Power Meter Crankset - 165mm 2x 12-Speed 50/37t 8-Bolt Direct Mount DUB Spindle Interface Natural Carbon E1 MFPN=00.4118.421.046 Shimano changed to this sometime

Shimano changed to this sometime in 2013

See installation instructions for recommendations on installing pins

Smooth with a synthetic cork

99mm Interface DUB Primary Color Black BCD Direct Mount SRAM 8 Bolt Crank Arm Length 172

The improved lateral rigidity reduces vibrations and noise during braking and also has improved heat resistance and increased stability

SRAM RED AXS Power Meter Crankset - 165mm 2x 12-Speed 50/37t 8-Bolt Direct Mount DUB Spindle Interface Natural Carbon E1 MFPN=00.4118.421.046 Shimano changed to this sometime29 g lighter than previous generation Power meter is fully integrated into the chainring for lighter weight Power readings are accurate within + 1. 5% and arent affected by climate conditions during a ride Measures right and left leg power balance X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear Crisp and accurate front shifts DUB bottom bracket adds durability and simplicity SRAM Model