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  • Shimano XT RT81 Centerlock Disc Rotor
  • OptionsShimano -
ShimanoXT RT81 Centerlock Disc Rotor
Sale $51.74 - $57.00

Item # SHI00MC

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  • Silver, 203mm ($51.74)
  • Silver, 180mm ($57.00)
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Item # SHI00MC

XT RT81 Centerlock Disc Rotor

Shimano's XT-level centerlock rotor uses Ice Technology and a deeper disc area to manage heat better than an all-steel rotor. Ice-Tech construction consists of an aluminum core sandwiched between steel exteriors to provide better heat dissipation. The rotor is then joined to an aluminum carrier which further improves heat dissipation and also helps the rotor resist bending. The result is reduced brake fade for more consistent braking, especially on long descents. These rotors are compatible with centerlock hubs only. An HB20 lockring is required for 15 and 20mm thru-axle hubs, which is sold separately.

  • Shimano XT-level centerlock disc rotor used primarily for mountain bikes
  • Ice-Tech design manages heat for consistent braking on long descents
  • Aluminum carrier further dissipates heat and helps rotor resist bending
  • Separately-purchased HB20 lockring required for 15 and 20mm thru-axles
Tech SpecsWeight
Tech Specs
[rotor] steel, [carrier] aluminum
Attachment Type
Shimano disc brakes, centerlock hubs
160mm, 180mm
Recommended Use
cross-country, enduro, trail
Manufacturer Warranty
2 years

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Silver, 203mm
Silver, 180mm
rotor only

Claimed Weight

Claimed weights are provided by the vendor.

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[160mm] 122g, [180mm] 149g

Reviews & Community


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Works great

  • Familiarity: I've put it through the wringer

Shimano rotors are made well and paired with the correct Shimano brakes, makes stopping a breeze.

Unanswered Question

Will these rotors fit in Sram Level TL brakes? (using same rotor size as the Sram rotors.)