Popular Shimano RT-MT900 Center Lock Brake Rotor for XTR Internal Teeth + Magnet

The XTR RT-MT900 Brake Rotor with Magnet by Shimano – Cooling technology also for e-bikes

The RT-MT900 center lock brake rotor from the XTR series comes with an internally toothed magnetic lockring for the Shimano EW-SS302 speed sensor. Thus, it is suited for e-bikes equipped with a DU-EP800, EP801 or EP600 motor and is intended for use on the rear wheel only. Thanks to FREEZA Ice Technology heat dissipation, the temperatures that occur during braking are significantly reduced, resulting in more consistent braking performance. The service life of the brake pads is also extended. The proven sandwich construction of the RT-MT900 with an aluminium core between two stainless steel layers ensures efficient heat dissipation via the integrated cooling fins, which, unlike the XT version, are painted black. In addition, the 203 mm rotor size offers a considerable weight advantage.

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:

160 mm, 180 mm, 203 mm

Design:

2-piece

Rotor Material:

stainless steel outer and aluminium core sandwich construction

Spider 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-R**, BR-R8170*, BR-R8070*, BR-R7170*, BR-R7070*, BR-4770*, BR-RS805*, BR-R785*, BR-RS785*, BR-RS505*, BR-RS405*, BR-RX820-LE*, BR-RX810*, BR-RX400*

Brake Pad Compatibility:

sintered***, organic

* not compatible with 203 mm
** only 160 mm
*** with BR-S700 and BR-S7000 only organic

Compatibility:

• EW-SS302 speed sensor
• DU-EP800 / DU-EP800-CRG motor
• DU-EP801 / DU-EP801-CRG motor
• DU-EP600 / DU-EP600-CRG motor
• for brake pads with narrow pad shape
• only for use on the rear wheel (in combination with e.g. RT-MT900 standard version on the front wheel)
• lockring with internal teeth: compatible with 10 mm quick releases and 12 mm thru-axles

Features:

• including magnetic lockring (internal toothing) for Shimano speed sensor EW-SS302 for disc brake
• performance indicator: ultimate (level 3 out of 3)
• stable and versatile braking performance under the toughest conditions
• FREEZA Ice Technology and sandwich construction for even faster heat dissipation
• heat-diffusing lacquer
• painted spider, polished rotor
• lockring made of anodised aluminium
• painted cooling fins

Technology:

Ice Tech FREEZA
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 ribs in the aluminium provide even better heat compensation. This cooling technology creates consistently high performance and longer brake pad durability while reducing fading and brake noise.

Manufacturer Numbers:

160 mm:

I-RTMT900SJ

180 mm:

I-RTMT900MJ

203 mm:

I-RTMT900LJ

Contents:

• 1 x Shimano RT-MT900 brake rotor
• 1 x Shimano magnetic lockring for EW-SS302