Shimano XTR M9100 Oval (CUSTOM Offset)

Custom designed chainring for Shimano M9100, MT900 cranksets with optimized offset allows you to place the chainring closer to the frame for improved chainline.
Compatible with 12-speed chains (incl. Shimano HG+).

  • Model
  • Color
  • Made from
  • Surface coating
  • Made with
  • Ovality
  • Timing
  • Chainring shape
  • Compatible cranksets
  • Weight, grams
  • Offset, mm

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  • Special tooth shape guarantees a tighter contact with chain and softer pedaling (in comparison with regular chainrings)

  • Chamfered edges and wide mud gap keeps the ring from getting muddy

  • Increased tooth height improves chain retention while the bike is shivering and jolting

  • Overall bicycle weight reduction in the range of 150-400 grams (with no front derailleur and chainguide)

  • Manufactured using highly durable aluminum alloy

  • Variable teeth thickness prevents chain dropping


  • You get a wide range of chainring sizes to choose from, starting from 26T

  • You can reach an optimal drivetrain chainline value with variable chainline technology (VCLT)

  • You save bike weight by not using crankset spider and you can opt for the chainring with an appropriate specs for your drivetrain



  • Even at-the-wheel distribution of pedaling torque

  • Improved responsiveness and pedaling smoothness, narrower dead spots and increased span of your gluteus and hamstrings

  • Easier uphill riding, especially on soft and slippery terrains

  • Increased pedaling efficiency

Specifications for Shimano XTR M9100 Oval (CUSTOM Offset)

Model 28T or 30T or 32T or 34T or 36T
Color Black or Silver or Blue or Gold or Green or Orange or Red or Violet
Made from 7075-T651 Aluminum Alloy
Surface coating Anodizing
Made with CNC milling
Ovality 12%
Timing 108° after TDC (top dead center)
Chainring shape Oval
Compatible cranksets Shimano M9100, MT900
Weight, grams 47 (28T), 53 (30T), 57 (32T), 62 (34T), 68 (36T)
Offset, mm 6.4 (28-32T), 5.9 (34-36T)