
( Brand: All City ), ( Part Type: Derailleur Hanger ), ( UPC: 708752472655 )
The **All-City 809 Derailleur Hanger (Part #708752472655)** is a precision-engineered, high-performance component designed to enhance the reliability and durability of your bicycle s rear derailleur system. Crafted from a robust, heat-treated alloy, this hanger is built to withstand the rigors of daily riding, whether you're tackling urban commutes, gravel roads, or light off-road trails. Its sleek, streamlined design ensures a seamless integration with the frame, minimizing friction and reducing the risk of misalignment, which is critical for smooth shifting and optimal chain performance. The hanger features a precise, interference-fit connection to the frame, allowing for quick and easy installation without the need for specialized tools, though a light coat of grease can help prevent corrosion and ensure a snug fit. This component is particularly well-suited for modern mountain bikes, hybrid bikes, and gravel bikes equipped with a 1x or 2x drivetrain setup, where consistent derailleur function is essential for efficient pedaling and gear engagement. Built to last, the All-City 809 hanger is a drop-in replacement for standard derailleur hangers, offering a cost-effective upgrade that can significantly extend the lifespan of your derailleur and reduce the likelihood of chain derailments or shifting issues. Whether you're a casual rider looking to maintain your bike s performance or a cyclist seeking a reliable, no-fuss solution, this hanger delivers the strength and precision needed to keep your drivetrain running smoothly mile after mile.
The **Shimano 708752472655 All-City 809 Derailleur Hanger** is a common replacement part for older Shimano derailleur setups, particularly those from the **Deore or SLX** series. Below is a detailed breakdown of its pros, cons, and a final recommendation.
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### **Pros**
1. **Compatibility with Older Shimano Systems**
The 809 hanger is designed for **Shimano Deore and SLX** derailleurs from the **1990s to early 2000s**, making it a straightforward replacement for bikes with these setups. It fits **8-speed and 9-speed** systems, which were widely used in that era.
2. **Durability and Strength**
Shimano s **All-City** line was known for its **robust construction**, often made from **steel or heavy-duty aluminum**, which resists bending better than some aftermarket alternatives. This makes it a reliable choice for riders who prioritize longevity.
3. **Easy Installation**
The hanger is **drop-in compatible** with most **standard BB (bottom bracket) shells** (typically **BB86 or Octalink** for older systems). It does not require machining or special tools for installation, though proper alignment is crucial for smooth shifting.
4. **Budget-Friendly**
Compared to **OEM Shimano hangers** (which can be expensive), this aftermarket part is **affordably priced**, making it a cost-effective solution for riders on a budget.
5. **Widely Available**
Since it s a **common replacement part**, it can be found at most **bike shops, online marketplaces (eBay, Amazon, etc.), and Shimano distributors**. This ensures easy sourcing if needed.
6. **Standard Dimensions**
The hanger follows **industry-standard measurements**, meaning it will not interfere with **crankset or chainline adjustments** when properly installed. This avoids the need for custom modifications.
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### **Cons**
1. **Limited Compatibility with Modern Systems**
The **809 hanger is not compatible with newer Shimano derailleurs** (e.g., **Deore XT, SLX, or modern 10/11/12-speed systems**). If upgrading to a newer drivetrain, this part will no longer fit without modification.
2. **Potential Chainline Issues**
If the **BB shell is not perfectly aligned** with the hanger, it can cause **uneven chain tension, skipping, or poor shifting**. This requires **precise installation** misalignment is a common issue with aftermarket hangers.
3. **Material Quality Variations**
While Shimano s **All-City** line is generally durable, some **third-party sellers** may offer **counterfeit or lower-quality replicas**. Buying from **authorized dealers** reduces this risk, but it s still a consideration.
4. **No Direct Shimano Support**
Unlike **OEM Shimano hangers**, this part does not come with **Shimano s warranty or technical support**. If installation or fitment issues arise, troubleshooting may require external help.
5. **Potential for Wear Over Time**
While steel or aluminum hangers are strong, **excessive force (e.g., from aggressive riding or crashes)** can still cause **bending or fatigue**. Regular inspection is recommended.
6. **Not Ideal for High-End or Custom Builds**
For **high-performance or custom drivetrains**, a **custom-machined or OEM hanger** (e.g., **Shimano s own 708752472655 or aftermarket brands like **Race Face, Sunrace, or Truvativ**) may offer **better precision and longevity**.
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### **Final Conclusion & Recommendation**
The **Shimano 708752472655 All-City 809 Derailleur Hanger** is a **solid, budget-friendly choice** for riders maintaining **older Shimano Deore/SLX setups** from the **1990s to early 2000s**. It provides **good durability, ease of installation, and widespread availability**, making it a practical replacement when OEM parts are unavailable or too expensive.
**However**, it is **not ideal for modern drivetrains** and requires **careful installation** to avoid chainline issues. If you re working on a **modern bike or a high-performance setup**, consider **OEM Shimano hangers or high-quality aftermarket alternatives** (e.g., **Race Face Hanger, Sunrace 1000 series, or Truvativ**).
**Recommendation:**- **Buy it if:** You have an **older Shimano Deore/SLX bike (8/9-speed)**, need a **quick, affordable replacement**, and can ensure **proper alignment**.
- **Avoid it if:** You re upgrading to a **newer Shimano system**, want **long-term reliability**, or are building a **high-end custom drivetrain**.
- **Alternative options:** For **modern bikes**, look for **Shimano s latest hangers (e.g., 708752472655 for newer models) or premium aftermarket brands** for better fit and durability.
**Best Practice:**- **Measure your BB shell** before purchasing to confirm compatibility.
- **Use a hanger alignment tool** (or a **chainline gauge**) to ensure proper installation.
- **Consider a hanger with a slight overhang** (if needed) to prevent bending under load.
For most **casual to intermediate riders** maintaining **legacy Shimano bikes**, this hanger is a **good value choice**. For **serious cyclists or modern builds**, investing in a **higher-quality or OEM part** may be worth the extra cost.
REPLACEMENT DERAILLEUR HANGER Need to replace your derailleur hanger. Simply no longer need it. Fine used condition. This is a used derailleur hanger from an All City Space Horse Tiara.
Alloy construction. Simple yet elegant, this one plays nice with 1x and 2x setups, road bikes, Tbs any frame, really.