描述
Product Overview
The Shimano GRX Di2 RD-RX815 is an 11-speed electronic rear derailleur engineered specifically for gravel and mixed-terrain riding. It combines Shimano’s SHADOW RD+ chain stabilization technology with Di2 electronic shifting precision, delivering silent, reliable performance on rough surfaces. The integrated chain stabilizer prevents chain slap and drops, while the ON/OFF switch allows riders to match tension to terrain. Compatible with 11-speed road cassettes up to 34T, it represents the pinnacle of gravel-specific drivetrain technology.
Key Features
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SHIMANO SHADOW RD+ technology — Low-profile design with integrated chain stabilizer prevents chain slapping and drops on rough terrain .
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Adjustable chain stabilizer with ON/OFF switch — Switch the stabilizer on for rough gravel or off for smooth tarmac, adapting to any terrain .
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Gravel-tuned clutch tension — Specifically calibrated for mixed-surface riding, delivering silent and uninterrupted rear shifting .
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Di2 electronic shifting — Digital precision with synchronized shifting, compatible with current road DUAL CONTROL LEVER systems .
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Wide gear compatibility — Supports 11-speed road cassettes with low sprocket from 30T to 34T .
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Sealed bearing pulleys — Both guide and tension pulleys feature sealed bearings for durability and smooth operation .
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Hollow B-axle — Reduces weight while maintaining structural rigidity .
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E-TUBE PROJECT firmware updates — Keeps the derailleur current with the latest features via Shimano’s E-TUBE platform .
Specifications
| Item | Details |
|---|---|
| Model No. | RD-RX815 |
| Series | GRX Di2 |
| Rear Speeds | 11 |
| RD Construction | SHIMANO SHADOW RD+ |
| Mount | Direct attachment (conventional) / Direct mount compatible |
| Max. Front Difference | 17T |
| Top Sprocket | Max. 11T / Min. 11T |
| Low Sprocket | Max. 34T / Min. 30T |
| Total Capacity | 38T |
| Guide Pulley Bearing | Sealed Bearing |
| Tension Pulley Bearing | Sealed Bearing |
| Pulley Teeth | 13T |
| B-Axle | Hollow Axle |
| Di2 Connectivity | Wired, SD50 port (1 pcs) |
| Firmware Update | E-TUBE PROJECT |
| Fluoric Coated Link Bushings | 4 |
| Average Weight | 287 g |
What’s in the Box
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1 x Shimano GRX Di2 RD-RX815 rear derailleur
SHIMANO GRX Di2 RD-RX815 11SPD SHADOW REAR DERAILLEUR | 十一速影子波腳
產品概述
Shimano GRX Di2 RD-RX815 係一款專為碎石路同混合地形騎行而設嘅十一速電子後波腳。結合 Shimano SHADOW RD+ 鏈條穩定技術同 Di2 電子變速精準度，喺崎嶇路面上提供安靜可靠嘅表現。整合式鏈條穩定器防止鏈條甩動同掉落，ON/OFF 開關俾騎士按地形調整張力。兼容最大 34T 嘅十一速公路飛輪，代表碎石路專用傳動技術嘅頂峰。
主要特點
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SHIMANO SHADOW RD+ 技術 — 低輪廓設計配整合式鏈條穩定器，喺崎嶇地形防止鏈條甩動同掉落 。
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可調鏈條穩定器配 ON/OFF 開關 — 崎嶇碎石路開啟穩定器，平坦路面關閉，適應任何地形 。
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碎石路專用離合器張力 — 專為混合路面騎行校準，提供安靜不中斷嘅後變速表現 。
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Di2 電子變速 — 數位精準度配同步變速，兼容現行公路 DUAL CONTROL LEVER 系統 。
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廣泛齒輪兼容性 — 支援低速飛輪 30T 至 34T 嘅十一速公路飛輪 。
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密封軸承導輪 — 導向輪同張力輪均採用密封軸承，耐用且運作順滑 。
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中空 B 軸 — 減輕重量同時保持結構剛性 。
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E-TUBE PROJECT 韌體更新 — 透過 Shimano E-TUBE 平台保持波腳軟件最新 。
產品規格
| 項目 | 詳情 |
|---|---|
| 型號 | RD-RX815 |
| 系列 | GRX Di2 |
| 後變速別 | 11 |
| RD 構造 | SHIMANO SHADOW RD+ |
| 安裝方式 | 直接附接（傳統）／兼容直鎖式 |
| 最大前齒差 | 17T |
| 高位飛輪 | 最大 11T／最小 11T |
| 低位飛輪 | 最大 34T／最小 30T |
| 總齒容量 | 38T |
| 導向輪軸承 | 密封軸承 |
| 張力輪軸承 | 密封軸承 |
| 導輪齒數 | 13T |
| B 軸 | 中空軸 |
| Di2 連接 | 有線，SD50 端口（1 個） |
| 韌體更新 | E-TUBE PROJECT |
| 氟塗層連桿軸襯 | 4 |
| 平均重量 | 287 克 |
包裝內容
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1 個 Shimano GRX Di2 RD-RX815 後波腳
商品評價
目前沒有評價。