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Rear Derailleur, Shimano Dura-Ace (RD7402) 6/7/8 SP - $50 (SAN DIEGO)
part type:
derailleurs
condition:
excellent
make / manufacturer:
Shimano
model name / number:
Dura-Ace RD7402
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Full Specifications
General Information
- **Model:** Shimano Dura‑Ace RD‑7402
- **Series:** Dura‑Ace 7400‑series
- **Production years:** **1989–1996**
- **Country of manufacture:** Japan
- **Weight:** **~207 g** (average)
Drivetrain Compatibility
- **Speeds:**
- Designed for **8‑speed SIS** indexing
- Also compatible with **6‑ and 7‑speed** drivetrains (with correct cable routing)
- **Cage length:** **Short cage**
- **Shifter compatibility:**
- Works with **6/7/8‑speed Dura‑Ace SIS** using standard cable routing
- Works with other indexed shifters using **“B‑type” cable routing** (per Sheldon Brown reference in listing)
Notes on the 7400‑Series Evolution
The RD‑7402 is the **third major iteration** of the 7400 family, following 6‑speed (7400) and 7‑speed (7401) versions. It represents Shimano’s early refinement of **SIS indexed shifting**, which debuted with this groupset line.