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Rival AXS 12-Speed Rear Derailleur - Bike Build

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Why We Like The Rival AXS 12-Speed Rear Derailleur

SRAM's Rival AXS 12-Speed Rear Derailleur is the latest example of the brand's decade-long pursuit of drivetrain innovation. In any drivetrain configuration, the Rival AXS rear derailleur makes for the precise and quick shifting we continuously count on for a smooth and quiet ride. With this derailleur, we expect to see intuitive and consistent shifting that's straightforward and simple. Easy personalization comes from SRAM AXS enabling, and X-SYNC pulleys reach the highest level of performance and durability we can imagine.


  • A rear derailleur with a simple setup for eTap AXS electronic drivetrains
  • Enjoy precise, silent, and reliable shifting performance
  • Aluminum cage with steel pulley bearings for optimal strength to weight
  • SRAM AXS enabled for easy personalization and efficiency
  • Spring clutch keeps the drivetrain both secure and silent
  • X-SYNC pulleys increase durability and improve performance
  • Item #SRMD151
[cage] aluminum, [pulley bearings] steel
[max tooth] 36
Cassette Range
10-28T, 10-30T, 10-33T, 10-36T
1x or 2x
SRAM Rival eTap AXS
1 B gap adjustment tool, 1 battery terminal cover
Claimed Weight
11.7oz (331g)
Manufacturer Warranty
2 years
road cycling

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