Shimano RT-MT800 Center Lock Brake Rotor for XT / Ultegra Internal Teeth

Item number: 71448
RT-MT800 Center Lock Brake Rotor for XT / Ultegra Internal Teeth - silver-black/180 mm
RT-MT800 Center Lock Brake Rotor for XT / Ultegra Internal Teeth - silver-black/180 mm
RT-MT800 Center Lock Brake Rotor for XT / Ultegra Internal Teeth - silver-black/180 mm
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.91 / 5.00

The RT-MT800 brake rotor by Shimano stands for perfect heat dissipation

The Shimano RT-MT800 brake rotor with internal serration uses Ice Technologies FREEZA heat dissipation to further reduce temperatures, resulting in more consistent braking performance. The life of the brake pads is also extended. The RT-MT800's proven sandwich construction with an aluminium core between two layers of stainless steel ensures efficient heat dissipation via the integrated radiation fins.

Guidelines for Replacing E-bike Components:

Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.

Technical Information:

Mount: Center Lock
Diameter: 140 mm, 160 mm, 180 mm, 203 mm
Design: 2-piece
Rotor Material: stainless steel outer and aluminium core sandwich construction
Spider Material: Aluminium
Lockring Material: Aluminium

Approved For:

Brake Compatibility: 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-R7170*, BR-R7070*, BR-4770*, BR-RS805*, BR-R785*, BR-RS785*, BR-RS505*, BR-RS405*, BR-RX810*, BR-RX400*
Brake Pad Compatibility: sintered***, organic

* not compatible with 203 mm (BR-R9170-R also not compatible with 180 mm)
** only 160 mm
*** with BR-S700 and BR-S7000 only organic


- for brake pads with narrow pad shape


- great heat dissipation due to innovative design
- reduced fading
- easy installation with Spline Mount and lockring (internal gearing)
- painted spider, polished rotor, anodised lockring

Note: For 15 mm and 20 mm front thru axle hubs, the SM-HB20 lockring must be used.


Shimano Ice Technologies provide a fast heat dissipation at your disc brake. The brake pads are equipped with aluminium cooling fins. The brake rotor is constructed using a sandwich technique in which stainless steel encloses an aluminium core. The stainless steel on both flanks ensures long durability, the aluminium allows heat dissipation. FREEZA is the further development of the brake rotor, in which additional, specially coated ribs in the aluminium of the rotor ensure even better heat compensation. This cooling technology creates consistently high performance and longer brake pad durability while reducing fading and brake noise.

Manufacturer Numbers:

140 mm: I-RTMT800SSI
160 mm: I-RTMT800SI
180 mm: I-RTMT800MI
203 mm: I-RTMT800LI


- 1 x Shimano RT-MT800 brake rotor
- 1 x lockring


  • silver-black/140 mm: 88 g
  • silver-black/160 mm: 108 g
  • silver-black/180 mm: 132 g
  • silver-black/203 mm: 163 g


  • silver-black/140 mm, in stock
  • silver-black/160 mm, out of stock
  • silver-black/180 mm, in stock
  • silver-black/203 mm, in stock

Customer Reviews (6)


Customer Reviews (6)


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by jean marc c.  on 27.06.2022
verified purchase

tout parfais

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by Jesús D.  on 07.04.2022
verified purchase

El producto llegó rapidísimo y en perfecto estado

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by Manuel C.  on 25.03.2022
verified purchase

Excelentes discos!

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by Christian W.  on 21.05.2020 (modified on 27.01.2021)

Sehr gute Bremsscheibe. Zusammen mit G03A Belägen lautloses Bremsen.

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by Sigrun B.  on 02.04.2020
verified purchase

wie erwartet gute brems kraft einfach super

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by Sebastian R.  on 17.02.2020

Top Bremsscheibe. Gleiches Gewicht wie die XTR Scheibe, aber leichter als die Dura-Ace Scheiben. Verziehen sich ein bisschen wenn sie warm werden, aber noch im Rahmen

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