描述

SHIMANO RT-MT900 CENTER LOCK 心鎖碟片（配內鎖環）

產品概述

SHIMANO RT-MT900 是 XTR 及 DURA-ACE 系列的頂級心鎖碟片，採用 ICE TECHNOLOGIES FREEZA 散熱技術，在極端條件下提供穩定、可靠的制動性能。碟片以三層夾層結構（不鏽鋼—鋁合金—不鏽鋼）製成，內層鋁合金延伸出大面積散熱鰭片，大幅提升散熱效率，縮短煞車距離並延長來令片壽命 。

主要特點

ICE TECHNOLOGIES FREEZA 散熱技術
三層夾層結構（不鏽鋼—鋁合金—不鏽鋼）有效降低煞車時產生的熱量。鋁合金內芯延伸出的散熱鰭片大幅提升冷卻能力，確保在嚴苛條件下依然保持穩定制動，減少來令片磨損與噪音 。

進一步輕量化
140mm 及 160mm 版本較上一代再減重 5g 與 10g；180mm 及 203mm 版本在散熱性能上再提升 20°C，同時 203mm 版本較上一代減重達 30g 。

內鎖環設計
隨附內齒鎖環（Internal Serration），適用於 10mm 快拆及 12mm 貫穿軸。碟片本身為兩件式設計，外圈不鏽鋼、內爪鋁合金 。

技術規格

重量參考

相容煞車夾器

BR-M9100、BR-M9120、BR-M9000、BR-M9020、BR-M8100、BR-M8120、BR-M8000、BR-M8020、BR-M7100、BR-M7120、BR-M7000、BR-M6100、BR-M6120、BR-M6000、BR-MT520、BR-MT420、BR-R9270、BR-R9170、BR-R8170、BR-R8070、BR-R7070、BR-4770、BR-RX810、BR-RX400 等 。

備註

• 內齒鎖環需使用對應的內齒工具（如 Shimano TL-LR11）安裝 。

• 若車架為 15mm 或以上貫穿軸，或鎖環與軸心套筒間隙不足，可能需改用外齒版本 。

• 203mm 碟片不適用於部分夾器型號（如 BR-R8170），購買前請確認相容性 。

Product Overview

The SHIMANO RT-MT900 is a top-tier Center Lock disc rotor from the XTR and DURA-ACE series, featuring ICE TECHNOLOGIES FREEZA heat dissipation for stable, reliable braking under extreme conditions. The rotor is constructed with a 3-layer sandwich structure (stainless steel—aluminium—stainless steel), with the aluminium core extending into large cooling fins that significantly improve heat dissipation, shorten braking distances, and extend pad life .

Key Features

ICE TECHNOLOGIES FREEZA
The 3-layer sandwich construction (stainless steel—aluminium—stainless steel) effectively reduces heat generated during braking. The aluminium core extends into exposed cooling fins that dramatically enhance cooling capacity, ensuring stable braking even in demanding conditions while reducing pad wear and noise .

Further Weight Reduction
The 140mm and 160mm versions are 5g and 10g lighter than the previous generation, while the 180mm and 203mm versions improve heat dissipation by another 20°C, with the 203mm version shedding 30g .

Internal Serration Lockring
Comes with an internally splined lockring, suitable for 10mm quick releases and 12mm thru-axles. The rotor itself is a 2-piece design with a stainless steel outer ring and aluminium spider .

Technical Specifications

Weight Reference

Compatible Brake Calipers

BR-M9100, BR-M9120, BR-M9000, BR-M9020, BR-M8100, BR-M8120, BR-M8000, BR-M8020, BR-M7100, BR-M7120, BR-M7000, BR-M6100, BR-M6120, BR-M6000, BR-MT520, BR-MT420, BR-R9270, BR-R9170, BR-R8170, BR-R8070, BR-R7070, BR-4770, BR-RX810, BR-RX400, and more .

Notes

• Internal serration lockrings require a compatible internal tool (e.g., Shimano TL-LR11) for installation .

• For 15mm or larger thru-axles, or if clearance between the lockring and axle sleeve is insufficient, an external serration version may be required .

• The 203mm rotor is not compatible with some caliper models (e.g., BR-R8170); confirm compatibility before purchase .