Shimano RT-MT900 Center-Lock Disc Rotor incl. Magnet
Please select a variant to check compatibility
Product information "RT-MT900 Center-Lock Disc Rotor incl. Magnet"
The pinnacle in mountain bike braking, XTR / Dura Ace RT-MT900 CENTER LOCK disc brake rotors deliver superb stopping power for the most aggressive riding. With integrated magnets in the lockring for EW-SS302 speed sensor system.
** only compatible with 160mm
Technologies
Ice-Tech FREEZA
SHIMANO’s ICE TECHNOLOGIES has realized the ultimate clad rotor, incorporating aluminum fins for enhanced heat control. With an increased surface area for heat dispersion, the rotor achieves a 50°C reduction in heat. This in turn generates a 20% increase in braking force durability and a 20% longer pad life.
Center-Lock System
The CENTER LOCK system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.
The ICE TECHNOLOGIES FREEZA rotors dissipate heat to maintain braking performance on long downhill stretches. SHIMANO's CENTER LOCK mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design.
Features - Shimano XTR / Dura Ace RT-MT900 Center-Lock Disc Rotor with Magnet-Lockring
- Stable and versatile brake performance in the most demanding conditions
- High-performance and consistent brake performance
- New ICE TECHNOLOGIES FREEZA construction for boosting heat dissipation
- Lockring type with internal (Internal Serration) toothing
- Magnet-Lockring for EW-SS302
- For use with SHIMANO STEPS speed sensor EW-SS302
Product features
- Use: E-Bike, MTB, Road, Gravel
- Group: XTR, Dura Ace / SHIMANO STEPS
- Model: RT-MT900
- Disc mount: Center-Lock
- Pad compatibility: Metal / Resin (with BR-S700 and BR-S7000 Resin only!)
- Lockring: With internal tool holder
Diameter (choose variant)
- 160mm intern (RT-MT900-SJ)
- 180mm intern (RT-MT900-MJ)
- 203mm intern (RT-MT900-LJ)
Compatibility - Brake Caliper
- BR-M9100*, BR-M9120, BR-M9110-R**, BR-M9000, BR-M9020, BR-M8100, BR-M8120, BR-M8110-R*, BR-M8000, BR-M8020, BR-M7100, BR-M7120, BR-M7110-R*, BR-M7000, BR-M6100, BR-M6120, BR-M6000, BR-MT520, BR-MT420, BR-M820, BR-M640, BR-S7000, BR-S700, BR-R9270**, BR-R9170*, BR-R8170*, BR-R8070*, BR-R7070*, BR-4770*, BR-RS805*, BR-R785*, BR-RS785*, BR-RS505*, BR-RS405*, BR-RX810*, BR-RX400*
** only compatible with 160mm
Material
- Rotor: Stainless steel / Aluminum
- Lockring: Aluminum
Color
- serial color
Weight (manufacturer information)
- 108g (160mm)
- 133g (180mm)
- 149g (203mm)
Scope of delivery
- 1 x Shimano RT-MT900 Center-Lock Disc Rotor incl. Magnet-Lockring
Technologies

Ice-Tech FREEZASHIMANO’s ICE TECHNOLOGIES has realized the ultimate clad rotor, incorporating aluminum fins for enhanced heat control. With an increased surface area for heat dispersion, the rotor achieves a 50°C reduction in heat. This in turn generates a 20% increase in braking force durability and a 20% longer pad life.
Center-Lock System
The CENTER LOCK system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.
XTR M9100
First ride impression XTR M9100
- Manufacturer number: IRTMT900LJ
Manufacturer:
SHIMANO INC.3-77 Oimatsu-cho, Sakai-ku, Sakai-shi
590-8577 Osaka
Japan
https://www.shimano.com
Person responsible in the EU:
Shimano Europe BVHigh Tech Campus 92
NL-5656 Eindhoven
Netherlands
[email protected]
https://www.shimano.com
Shimano RT-MT900 Center-Lock Disc Rotor incl. Magnet
The pinnacle in mountain bike braking, XTR / Dura Ace RT-MT900 CENTER LOCK disc brake rotors deliver superb stopping power for the most aggressive riding. With integrated magnets in the lockring for EW-SS302 speed sensor system.
** only compatible with 160mm
Technologies
Ice-Tech FREEZA
SHIMANO’s ICE TECHNOLOGIES has realized the ultimate clad rotor, incorporating aluminum fins for enhanced heat control. With an increased surface area for heat dispersion, the rotor achieves a 50°C reduction in heat. This in turn generates a 20% increase in braking force durability and a 20% longer pad life.
Center-Lock System
The CENTER LOCK system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.
The ICE TECHNOLOGIES FREEZA rotors dissipate heat to maintain braking performance on long downhill stretches. SHIMANO's CENTER LOCK mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design.
Features - Shimano XTR / Dura Ace RT-MT900 Center-Lock Disc Rotor with Magnet-Lockring
- Stable and versatile brake performance in the most demanding conditions
- High-performance and consistent brake performance
- New ICE TECHNOLOGIES FREEZA construction for boosting heat dissipation
- Lockring type with internal (Internal Serration) toothing
- Magnet-Lockring for EW-SS302
- For use with SHIMANO STEPS speed sensor EW-SS302
Product features
- Use: E-Bike, MTB, Road, Gravel
- Group: XTR, Dura Ace / SHIMANO STEPS
- Model: RT-MT900
- Disc mount: Center-Lock
- Pad compatibility: Metal / Resin (with BR-S700 and BR-S7000 Resin only!)
- Lockring: With internal tool holder
Diameter (choose variant)
- 160mm intern (RT-MT900-SJ)
- 180mm intern (RT-MT900-MJ)
- 203mm intern (RT-MT900-LJ)
Compatibility - Brake Caliper
- BR-M9100*, BR-M9120, BR-M9110-R**, BR-M9000, BR-M9020, BR-M8100, BR-M8120, BR-M8110-R*, BR-M8000, BR-M8020, BR-M7100, BR-M7120, BR-M7110-R*, BR-M7000, BR-M6100, BR-M6120, BR-M6000, BR-MT520, BR-MT420, BR-M820, BR-M640, BR-S7000, BR-S700, BR-R9270**, BR-R9170*, BR-R8170*, BR-R8070*, BR-R7070*, BR-4770*, BR-RS805*, BR-R785*, BR-RS785*, BR-RS505*, BR-RS405*, BR-RX810*, BR-RX400*
** only compatible with 160mm
Material
- Rotor: Stainless steel / Aluminum
- Lockring: Aluminum
Color
- serial color
Weight (manufacturer information)
- 108g (160mm)
- 133g (180mm)
- 149g (203mm)
Scope of delivery
- 1 x Shimano RT-MT900 Center-Lock Disc Rotor incl. Magnet-Lockring
Technologies

Ice-Tech FREEZASHIMANO’s ICE TECHNOLOGIES has realized the ultimate clad rotor, incorporating aluminum fins for enhanced heat control. With an increased surface area for heat dispersion, the rotor achieves a 50°C reduction in heat. This in turn generates a 20% increase in braking force durability and a 20% longer pad life.
Center-Lock System
The CENTER LOCK system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.
XTR M9100
First ride impression XTR M9100
- Manufacturer number: IRTMT900LJ
Manufacturer:
SHIMANO INC.3-77 Oimatsu-cho, Sakai-ku, Sakai-shi
590-8577 Osaka
Japan
https://www.shimano.com
Person responsible in the EU:
Shimano Europe BVHigh Tech Campus 92
NL-5656 Eindhoven
Netherlands
[email protected]
https://www.shimano.com
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