XTR/Dura-Ace Centerlock Disc Rotor
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Why We Like The XTR RT-MT900 Centerlock Disc Rotor
Designed to keep your braking system cool on long, demanding descents, the XTR RT-MT900 Centerlock Disc Rotor rapidly dissipates heat for more consistent braking performance in extreme conditions, as well as longer pad life and reduced brake fade. These rotors are optimized for the XTR M9100 and M9120 brakes, and feature a new design that improves cooling and decreases weight compared to the previous version of the XTR rotor, the RT-99.
Employing Shimano's Ice Technologies Freeza construction, these rotors use a 3-layer design consisting of two steel braking surfaces sandwiched over an aluminum core. This allows Shimano to take advantage of the high thermal conductivity of aluminum, whereas most companies simply use steel rotors. And thanks to a new heat dissipating paint on the exposed parts of the aluminum layer, the RT-MT900 rotors see their surface temperature cooled by up to 20-degrees Celsius compared the previous XTR RT-99 rotors. The 140mm and 160mm sizes are optimized for XC and focused on weight reduction, whereas the 180mm and 203mm rotors are made for aggressive trail and enduro with an emphasis on efficient cooling.
Details
- XTR rotor offering improved cooling and braking performance
- 3-layer Freeza construction dissipates heat on long descents
- Enjoy consistent performance, longer pad life, reduced brake fade
- Surface temp cooled by up to 20-degrees Celsius vs. RT-99 rotors
- 140mm and 160mm rotors see considerable weight savings for XC
- 180m and 203mm are designed for aggressive trail and enduro
- Shimano Centerlock attachment with lock ring included
- Item #SHI00LJ
- Material
- [core] aluminum, [braking surface] stainless steel, [lock ring] aluminum
- Attachment Type
- centerlock
- Compatibility
- Shimano XTR M9100 and M9120 calipers, Shimano Ice-Tech brake pads
- Diameter
- 140mm, 160mm, 180mm, 203mm
- Includes
- lockring
- Claimed Weight
- [140mm] 3.2oz (90g), [160mm] 3.8oz (108g), [180mm] 4.7oz (133g), [203mm] 5.3oz (149g)
- Activity
- mountain biking
- Manufacturer Warranty
- 3 years
- Manufacturer Part Number
- IRTMT900SS
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 1 ratings
Review Summary
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Selecting an option will reload the available reviews on the pageOctober 2, 2021
Life Changing Brake
- Familiarity:
- I've put it through the wringer
These rotors are so good I was thinking about getting the XTs for a lesser price but decided to go with these and I made the right decision. The cooling fins work so well. Before these I had non fin rotors and after only a few laps at the park I could cook and egg on them. Now with these it takes more than double the runs to get them even close to that hot. And even if they are hot they still maintain the same braking power the whole time. Would totally recommend to anyone who is having overheating problems or squeaky-brakeidis.
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August 19, 2020
Grey/black vs grey? Could you tell me the differences? From Shimano’s website I saw only one color. Super confused. Edit: XT is silver rotor and silver fins. XTR is silver rotor and black fins.
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Shimano XTR RT-MT900 rotor reviewBest centerlock disc rotors for mountain bikingLightweight disc rotors for XC ridingHigh-performance disc rotors for aggressive trailShimano Ice Technologies Freeza rotors explainedDurable braking solutions for enduro cyclistsHeat dissipating technology in disc rotorsXTR M9100 compatible disc rotorsLong-lasting brake pads for Shimano systemsOptimal braking performance on steep descentsComparing Shimano RT-MT900 and RT-99 rotorsChoosing the right size disc rotor for your bikeLearn more about XTR/Dura-Ace Centerlock Disc Rotor
