CAMPAGNOLO RD-21RE Record Rear Derailleur

( Brand: Campagnolo ), ( Manufacturer Part Number: RD-21RE ), ( Part Type: Derailleur ), ( Compatible Brand: For Campagnolo ), ( Color: Silver ), ( Material: Alloy, Aluminum ), ( Mounting Type: Bolt-on ), ( Number Of Speeds: 8 Speed ), ( Compatible Bike Type: Road Bike ), ( Country Of Origin: Italy ), ( Derailleur Cage Length: Short Cage )

Review CAMPAGNOLO Vintage C record Speed Rear Derailleur

The **Campagnolo RD-21RE 1994 C-Record Rear Derailleur** is a meticulously engineered component that embodies the legendary precision and performance synonymous with Campagnolo s high-end cycling technology. Part of the iconic **C-Record** series, this derailleur was designed for competitive cyclists who demanded flawless shifting, durability, and a refined aesthetic that complemented the sport s elite standards of the early 1990s. Crafted from high-grade steel, the RD-21RE features a robust, yet lightweight construction, with a **12-speed** (though originally introduced in a 10-speed configuration, later adapted for wider cassettes) design that ensures smooth and consistent shifting across a broad range of gearing options. The **RE** designation indicates its compatibility with Campagnolo s **Record** groupset, which was engineered for professional road racing, where reliability and performance were non-negotiable.

One of the standout features of the RD-21RE is its **Campagnolo s patented "Quick Release" pivot system**, which allows for rapid and tool-free adjustments, a game-changer for racers who needed to fine-tune their drivetrain on the fly. The derailleur s **H-shaped jockey wheels** and **precision-ground pulleys** minimize chain wear and friction, ensuring that power transfer remains efficient even under the most demanding conditions. The **adjustable limit screws** both high and low provide fine-tuned control over derailleur range, accommodating a variety of frame clearances and cassette setups, while the **indexing mechanism** delivers the crisp, repeatable shifts that cyclists relied on to maintain speed and efficiency in races. The **Campagnolo logo**, etched in bold relief on the derailleur s body, is not merely decorative but also serves as a testament to the brand s commitment to excellence, a hallmark of the C-Record series.

Visually, the RD-21RE exudes a timeless elegance, with its **matte black finish** and **sleek, aerodynamic profile** that seamlessly integrates with the aerodynamic frames of the era. The **Campagnolo "C" badge**, a symbol of the brand s heritage, is prominently displayed, reinforcing the derailleur s identity as a piece of cycling history. Underneath its polished exterior, the RD-21RE is built to withstand the rigors of professional racing, with **hardened steel components** that resist fatigue and **sealed bearings** that ensure longevity even in the harshest conditions. Whether mounted on a vintage **Colnago C40**, a **Pinarello Dogma**, or another elite road frame, this derailleur delivers the precision and reliability that made Campagnolo a favorite among the world s best cyclists.

For collectors and enthusiasts, the **1994 RD-21RE** represents a rare and highly sought-after piece of cycling memorabilia, embodying the golden age of road racing when Italian engineering reigned supreme. Its combination of **technical innovation, craftsmanship, and historical significance** makes it not just a functional component, but a piece of automotive art. Whether restored to its original glory or preserved in its original condition, this derailleur stands as a testament to Campagnolo s enduring legacy in the world of competitive cycling.

The **Campagnolo Record RD-21RE (1994 C-Record) rear derailleur** is a classic, high-end component from the golden era of Italian bicycle manufacturing. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Legendary Build Quality and Durability**

The 1994 C-Record was built to last, featuring precision-machined aluminum components, robust springs, and high-grade bearings. Many of these derailleurs remain fully functional after decades of use, especially when properly maintained. The construction is far sturdier than modern budget derailleurs and often rivals modern mid-range units in terms of longevity.

2. **Superior Shifting Performance**

Campagnolo s hydraulic-like shifting (via its **Super Record** or **Record** groups) was renowned for its smoothness and precision. The 21RE model, while not hydraulic, uses a **cable-actuated system with a high-quality pulley system**, delivering near-hydraulic shifting performance. This makes it ideal for competitive riding where consistent, crisp shifts are critical.

3. **Lightweight for Its Era**

While not as light as modern carbon or ultra-lightweight aluminum derailleurs, the 1994 C-Record is significantly lighter than older Campagnolo models (e.g., 1980s models) and many contemporary budget derailleurs. Its weight is a result of optimized aluminum casting and minimalistic design.

4. **Aesthetic and Prestige Value**

The **Record** badge is synonymous with racing excellence, and owning a 1994 C-Record adds a touch of vintage racing heritage. The derailleur s design is timeless, with clean lines and a polished finish that appeals to enthusiasts and collectors.

5. **Compatibility with Modern Bikes (With Modifications)**

While the 1994 C-Record is designed for **10-speed (11-32t cassette range)**, it can be adapted to work with **modern 11-speed cassettes** using a **11-speed spacer kit** and a compatible cassette. However, this requires some adjustments and may not be as smooth as a native 11-speed derailleur.

6. **Resale Value and Collectibility**

As a **limited-production, high-end component**, the 1994 C-Record holds significant resale value, especially in well-preserved condition. It is a sought-after piece for collectors and vintage bike restorers.

7. **Mechanical Reliability**

Unlike modern electronic or hydraulic derailleurs, which can fail due to sensor issues or seal leaks, the 1994 C-Record is **fully mechanical** and relies on fewer failure points. With proper lubrication and maintenance, it can remain reliable for decades.

8. **Compatibility with Other Record Components**

If you own or plan to build a **full Record groupset**, the 1994 RD-21RE integrates seamlessly with other Record parts (cranks, shifters, cassette, etc.), offering a cohesive and high-performance setup.

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### **Cons**

1. **Limited Modern Compatibility**

- **Cassette Range:** The 1994 C-Record is designed for **10-speed cassettes (11-32t)**. While it can be adapted to **11-speed cassettes** with spacers, the shifting may not be as precise as a native 11-speed derailleur (e.g., Campagnolo Super Record or Shimano Deore).

- **Hydraulic vs. Mechanical:** Modern riders often prefer **hydraulic shifting** for its consistency, especially in wet or muddy conditions. The 1994 C-Record relies on **mechanical cables**, which can stretch over time and require more frequent adjustments.

- **Brake Compatibility:** If you have **modern disc brakes**, the 1994 C-Record may not fit as neatly as a contemporary derailleur, requiring additional spacers or modifications.

2. **Maintenance Requirements**

- **Cable and Housing:** Mechanical derailleurs require **regular cable and housing replacement** (every 1,000 2,000 miles or when shifting becomes sluggish). Neglecting this can lead to poor shifting performance.

- **Lubrication:** The pulleys and springs need **periodic lubrication** to prevent rust and ensure smooth operation, especially in harsh conditions.

- **Bearings:** While durable, the bearings may eventually wear out, requiring replacement (a task that requires some mechanical skill).

3. **Weight Compared to Modern Units**

While lightweight for its era, the 1994 C-Record is **heavier than modern carbon or ultra-lightweight aluminum derailleurs** (e.g., Shimano Ultegra or Campagnolo Super Record). For racers prioritizing weight savings, this may be a minor drawback.

4. **Parts Availability and Cost**

- **Spare Parts:** While not as rare as some vintage Campagnolo parts, finding **replacement springs, pulleys, or bearings** can be challenging and may require sourcing from specialty vendors.

- **Repair Costs:** If the derailleur fails, repairs (e.g., replacing the spring or pulley system) can be **more expensive than modern derailleurs** due to labor and part costs.

- **New vs. Used:** A **new 1994 C-Record** is no longer available, so you must buy used, which may come with hidden issues (e.g., worn bearings, rust).

5. **Learning Curve for Modern Riders**

- **Adjustment Complexity:** Campagnolo derailleurs require **specific adjustment techniques** (e.g., indexing, cable tension) that differ from Shimano or SRAM. Riders familiar only with modern brands may need to learn these nuances.

- **Compatibility with Modern Drivetrains:** If you have a **modern cassette (e.g., 11-34t)** or **wide-range groupset**, the 1994 C-Record may struggle with shifting consistency, especially in the largest cogs.

6. **Potential for Rust and Wear**

- If stored improperly (e.g., in a damp environment), the aluminum can **rust**, especially around the pivot points. A well-maintained example should not rust, but neglected ones may require cleaning and treatment.

- **Spring fatigue** can occur over decades of use, leading to inconsistent shifting. Replacing the spring is a relatively simple fix but adds to maintenance costs.

7. **No Electronic or Hydraulic Features**

- Modern derailleurs offer **electronic shifting (e.g., Shimano Di2, Campagnolo EPS)**, which provides **wireless, precise control** and eliminates cable maintenance. The 1994 C-Record lacks these features.

- **Hydraulic derailleurs** (e.g., Campagnolo Hydra-C) are more consistent in wet conditions and require less frequent adjustments.

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### **Conclusion**

The **1994 Campagnolo Record RD-21RE** is a **fantastic derailleur for enthusiasts, collectors, and riders who prioritize legacy performance, durability, and aesthetic appeal**. It excels in **smooth shifting, build quality, and historical significance**, making it a great choice for:

- **Vintage bike restorers** looking to replicate a classic racing setup.

- **Riders who appreciate mechanical shifting** and don t mind occasional maintenance.

- **Collectors** who value the prestige of the Record brand.

- **Those who enjoy the challenge** of working with a high-end, older component.

However, it is **not ideal for modern racers** who demand **hydraulic shifting, wide cassette compatibility, or minimal maintenance**. The **mechanical nature, limited modern compatibility, and higher repair costs** make it less practical for everyday use unless you are fully committed to its upkeep.

If you are **restoring a vintage bike** or building a **period-correct Record groupset**, the 1994 RD-21RE is an excellent investment. If you are looking for a **modern, low-maintenance derailleur**, a contemporary **Campagnolo Super Record, Shimano Ultegra, or SRAM Force** would be a better choice.

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### **Recommendation**

You are restoring a **vintage Campagnolo Record bike** (e.g., a 1990s racing frame).

You appreciate **mechanical shifting** and don t mind occasional adjustments.

You want a **durable, high-performance derailleur** with historical significance.

You are willing to **maintain it properly** (clean, lube, replace cables/housing as needed).

You plan to **keep it as a collector s item** or use it sparingly.

You need **hydraulic or electronic shifting** for modern performance.

You ride in **harsh conditions** (mud, salt, extreme weather) where mechanical derailleurs struggle.

You want **maximum cassette compatibility** (e.g., 11-34t, ultra-wide ranges).

You prefer **low-maintenance, modern derailleurs** with longer warranties.

You are not comfortable with **period-specific maintenance** (e.g., Campagnolo-specific adjustments

Details:

From 1994, This is the RD21-RE and fourth iteration of this 8 Speed Record Derailleur identified by 'Campagnolo' written on its outer parallelogram plate, featuring speed self-centering guide pulley. I would consider this rider condition, Its been cleaned up, it has its blemishes and as long you don't mind a few scuffs will do the job. Also, the cable clamp bolt is Allen Key/Hex Combo, paired with Cable Clamp Washer single prong uniquely a feature on Record derailleurs of this era. Campagnolo Record 8 Speed Rear Derailleur.

part #: rd21re prices

• $277.51-$395.05

specifications ribicycl:

• brand: Campagnolo
• mpn: Rd-21re
• part type: Derailleur
• compatible brand: For Campagnolo
• color: Silver
• material: Alloy, Aluminum
• mounting type: Bolt-on
• number of speeds: 8 Speed
• compatible bike type: Road Bike
• country of origin: Italy
• derailleur cage length: Short Cage

seller ribicycl:

• rating: 100.0%
• city: Saint Petersburg, Florida
• # reviews: 622

offer ribicycl:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: May 1, 2026
• quantity: 1

returns ribicycl:

• policy: No Returns

payments ribicycl:

• other
• wallet: Google-pay
• credit card: Visa

shipping ribicycl:

• service: USPS Ground Advantage
• class: Standard
• type: Calculated
• cost: $7.80
• carrier: USPS
• transit: 5-11 Days

general ribicycl:

• Cycling > Bicycle Components Parts > Rear Derailleurs
• condition: Used

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