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

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

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-U8000, BR-U8020, 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-RX820*, BR-RX820-LE*, 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

Compatibility:

• for brake pads with narrow pad shape
• lockring with internal teeth: compatible with 9/10 mm quick release and 12 mm thru-axle
• for 15 mm and 20 mm thru-axles, use the SM-HB20 lockring instead

Features:

• great heat dissipation due to innovative design
• reduced fading
• easy installation with Spline Mount and lockring (internal gearing)
• lacquered spider, polished rotor, lockring made of aluminium, anodised

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:

140 mm:

I-RTMT800SSI

160 mm:

I-RTMT800SI

180 mm:

I-RTMT800MI

203 mm:

I-RTMT800LI

Contents:

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