SHIMANO DURA-ACE Di2 FD-R9250 前變速器（直裝式 / 2×12 速）

SHIMANO 史上最快的前變速，比 FD-R9150 快 45%。

SHIMANO DURA-ACE Di2 FD-R9250 是 DURA-ACE 頂級電子前變速器，專為 2×12 速公路車傳動系統而設。全新設計重量不到 100 克，正面區域減少 33%，變速速度比前代 FD-R9150 快 45%。結合 Di2 電子平台與 HYPERGLIDE+ 公路技術，在齒盤之間實現最快速、最無縫的切換，同時降低空氣阻力。

為何選擇 FD-R9250？

• 史上最快前變速：比 FD-R9150 快 45%，換檔近乎瞬時

• 極致輕量化：重量僅 96g，較 ULTEGRA FD-R8150 輕約 15g

• 空氣動力學優化：正面區域減少 33%，有效降低風阻

• HYPERGLIDE+ 技術：公路版 HYPERGLIDE+，鏈條與齒盤嚙合更順暢

• Di2 精準控制：電子變速在任何情況下都保持一致、精準的換檔表現

• 自動微調：系統自動修正導鏈板位置，徹底消除鏈條摩擦

• 同步變速功能：支援全同步及半同步變速模式，透過 E-TUBE 調整

適合哪些騎乘？

公路、鐵人三項、計時賽。

技術規格

兼容性

• 變速把手：ST-R9250、ST-R9270（DURA-ACE Di2 12 速）、ST-R8150、ST-R8170（ULTEGRA Di2 12 速）、ST-R7170（105 Di2 12 速）

• 曲柄：FC-R9200、FC-R9200-P、FC-R8100、FC-R8100-P、FC-R7100、FC-RS520

• 鏈條：CN-M9100、CN-M8100、CN-M7100、CN-M6100 等 HG 12 速鏈條

• 電源線：EW-SD300-I（1 個連接）

• 束環轉接座：SM-AD91（另購，用於無焊接座車架）

安裝注意

• 此為直裝式安裝，需車架配備焊接座；如車架無焊接座，需另購 SM-AD91 束環轉接座。

• FD-R9250 採用電子控制，無需傳統機械式調整螺栓。

• 連接電線時請使用 SHIMANO 原廠工具 TL-EW300。

• 進行變速操作時，務必保持曲柄轉動。

• 請勿使用高壓清洗機直接沖洗，避免水分進入 E-TUBE 端口。

• 未使用的 E-TUBE 端口請務必裝上防塵塞。

SHIMANO DURA-ACE Di2 FD-R9250 FRONT DERAILLEUR (Braze-On / 2×12-Speed)

SHIMANO’s fastest ever front shifting, 45% faster than FD-R9150.

The SHIMANO DURA-ACE Di2 FD-R9250 is DURA-ACE’s flagship electronic front derailleur, designed for 2×12-speed road drivetrains. The new design tips the scales under 100 grams, with a 33% reduction in frontal area and shifting 45% faster than the previous FD-R9150. Combining the Di2 electronic platform with HYPERGLIDE+ road technology, it delivers the fastest, most seamless chainring shifts while reducing aerodynamic drag.

Why FD-R9250?

• Fastest Ever Front Shifting: 45% faster than FD-R9150, with near-instantaneous shifts

• Ultra-Lightweight: Only 96g, approximately 15g lighter than ULTEGRA FD-R8150

• Aerodynamic Optimisation: 33% reduction in frontal area for reduced drag

• HYPERGLIDE+ Technology: Road incarnation of HYPERGLIDE+ for smoother chainring engagement

• Di2 Precise Control: Electronically precise shifting under any circumstances

• Automatic Trimming: System automatically corrects guide plate position to eliminate chain rub

• Synchronized Shifting: Fully and semi-synchronized modes adjustable via E-TUBE

Ideal For

Road, triathlon, time trial.

Technical Specifications

Compatibility

• Shifters: ST-R9250, ST-R9270 (DURA-ACE Di2 12-speed), ST-R8150, ST-R8170 (ULTEGRA Di2 12-speed), ST-R7170 (105 Di2 12-speed)

• Cranks: FC-R9200, FC-R9200-P, FC-R8100, FC-R8100-P, FC-R7100, FC-RS520

• Chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100 and other HG 12-speed chains

• Power Cable: EW-SD300-I (1 connection)

• Clamp Adapter: SM-AD91 (sold separately, for frames without braze-on socket)

Installation Notes

• This is a Braze-On mount; the frame must have a braze-on socket. If not, the SM-AD91 clamp adapter is required separately.

• The FD-R9250 uses electronic control; no traditional mechanical adjustment bolts are required.

• Use SHIMANO original tool TL-EW300 when connecting electric wires.

• Always keep the crank rotating during shifting operations.

• Do not use a high-pressure washer; avoid water entering E-TUBE ports.

• Always attach dummy plugs to unused E-TUBE ports.