Shimano XT FC-M785 Chainring - 38t | 104mm BCD | 10-Speed AM-Type Outer

Shimano XT FC-M785 Chainring (AM-type) - 38T | 104mm | 10-Speed Shimano

Shimano XT FC-M785 Chainring - 38t | 104mm BCD | 10-Speed AM-Type Outer

Shimano XT FC-M785 Chainring - 38t | 104mm BCD | 10-Speed AM-Type Outer

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Is the Shimano XT FC-M785 38t the Right Chainring for Your 2x10 Trail Build?

The Shimano Deore XT FC-M785 38t chainring is the AM-type outer ring for the XT M785 Dyna-Sys 2x10 crankset, designed for trail and all-mountain riding where a wide gear range matters more than front shift frequency. The 38t outer pairs with a 24t inner in the Shimano-specified AM combination for a 38/24t 2x setup that covers everything from loose, steep descents in the small ring to fast, flat fire road sections in the large ring without a front shift. Aluminum construction keeps weight competitive while the shift ramps and guide pins deliver the smooth, reliable front shifting that defines Shimano's Dyna-Sys 10-speed MTB platform.

104mm BCD, 4-bolt mount. Compatible with Shimano Deore XT FC-M785 cranksets running a 10-speed MTB drivetrain. Sold as a single outer chainring -- inner ring and hardware sold separately. MPN: Y1ML98040. Black finish.

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$74.99
$74.99 $85.00
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  • Estimated delivery: May 25 - May 29

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Specifications

  • MPN: Y1ML98040
  • Tooth Count: 38t
  • Ring Position: Outer (AM-type)
  • BCD: 104mm
  • Mount: 4-bolt
  • Speed: 10-speed
  • Material: Aluminum
  • Compatible Cranks: Shimano Deore XT FC-M785
  • Drive Type: 2x (pairs with 24t AM-type inner)
  • Color: Black
  • Sold As: Single outer chainring only

FAQ

What does the AM-type designation mean?

AM stands for All Mountain, indicating a ring optimized for all-mountain and trail riding where the wider 38/24t range suits technical terrain. Shimano also offered a XC-type combination with narrower gearing for cross-country racing.

Does this include the inner ring?

No. Sold as a single outer chainring only. The 24t AM-type inner ring and any mounting hardware are sold separately.

Will this fit other Shimano MTB cranks with 104mm BCD?

This ring is specified for the Shimano XT FC-M785 crankset. While the 104mm BCD is a common standard, compatibility with other cranks is not guaranteed due to chainline and front derailleur setup differences. Confirm fitment with your specific crankset before ordering.

Best For

Trail and all-mountain riders replacing a worn outer ring on a Shimano Deore XT FC-M785 2x10 crank running a 38/24t AM configuration.

Shimano XT FC-M785 Chainring - 38t | 104mm BCD | 10-Speed AM-Type Outer Reviews:

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