CAMPAGNOLO Record Sprockets 8033148858228 11S CS9-RE127
( Brand: Campagnolo ), ( Manufacturer Part Number: CS9-RE ), ( Part Type: Sprocket ), ( Compatible Brand: For Campagnolo ), ( Color: Silver ), ( Material: Aluminum, Steel, Titanium ), ( Number Of Speeds: 11 Speed ), ( Smallest Sprocket: 12 Tooth ), ( Largest Sprocket: 27 ), ( Compatible Bike Type: Mountain Bike, Racing Bike, Recumbent Bike, Road Bike, Tandem Bike, Tandem Tricycle, Touring Bike ), ( Country Of Origin: Italy ), ( Item Weight: 244.7g ), ( UPC: 033148858228 )
Review CAMPAGNOLO Cs9-re Record 11s Sprockets
The **Campagnolo CS9-RE Record 11-Speed Sprocket Set (CS9-RE127)** represents the pinnacle of performance and precision in road cycling, meticulously engineered to deliver unmatched power transfer and efficiency for competitive riders seeking an edge. This high-performance sprocket set is specifically designed for the iconic **Record 11-speed drivetrain**, combining Campagnolo s legendary craftsmanship with cutting-edge technology to ensure seamless shifting, durability, and optimal chain engagement. The **CS9-RE** designation signifies its status as a **Record EVO** component, built with **carbon-reinforced materials** and **ultra-precise machining** to minimize weight while maximizing strength, making it an ideal choice for racers and serious time trialists who demand every gram and fraction of a second shaved from their performance.
Featuring a **12-tooth front chainring and a 27-tooth rear cog**, this sprocket set is optimized for **aerodynamic efficiency and climbing prowess**, striking a perfect balance between acceleration and endurance. The **12-tooth chainring** provides a substantial gear advantage for sprinting and flat-out speed, while the **27-tooth rear cog** ensures strong climbing capability without sacrificing top-end power. Each sprocket is **laser-cut and precision-ground** to achieve an **ultra-smooth chainline**, reducing friction and wear while enhancing shifting consistency critical for riders pushing the limits in races or long-distance efforts. The **Record 11-speed system** itself is renowned for its **superior shifting performance**, with Campagnolo s **Hydraulic Gold** or **Electronic Shift** compatibility ensuring near-instantaneous, precise gear changes even under extreme conditions.
Constructed from **high-grade steel with a black oxide finish**, the sprockets are built to endure the rigors of professional racing while maintaining a sleek, aerodynamic profile. The **carbon-reinforced design** of the CS9-RE series further reduces weight without compromising rigidity, allowing for a more responsive and efficient power transfer from the rider s legs to the wheels. This sprocket set is **fully compatible** with Campagnolo s **Record 11-speed cranks**, derailleurs, and cassettes, ensuring a seamless integration into any high-performance Record drivetrain setup. Whether used in a **one-day race, time trial, or stage race**, the **CS9-RE127** sprocket set delivers the reliability, speed, and precision that elite cyclists demand, making it a standout choice for those who refuse to compromise on performance.
Buying the **Campagnolo CS9-RE Record 11-speed sprockets (12-27, CS9-RE127)** is a significant investment for cyclists seeking high-performance, lightweight, and durable drivetrain components. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.
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### **Pros**
1. **Ultra-Lightweight Construction**
The CS9-RE sprockets are made from **carbon fiber**, which is significantly lighter than steel or aluminum alternatives. This reduces rotational mass, improving acceleration and efficiency, especially in hilly or sprint-heavy riding conditions.
2. **Super Smooth Shifting**
Campagnolo s **Super Record** technology ensures precise and consistent shifting, even under heavy loads or in extreme conditions. The **11-speed system** is optimized for smooth transitions between gears, reducing chain drop and improving reliability.
3. **Durability and Corrosion Resistance**
While carbon fiber is not immune to damage, it is highly resistant to corrosion compared to steel. The CS9-RE sprockets are designed to withstand harsh conditions, making them ideal for competitive racing or off-road use where durability is critical.
4. **Aerodynamic Performance**
The **aerodynamic profile** of the sprockets reduces wind resistance, which can be beneficial in time trials or high-speed riding, though the impact is more noticeable in the chainring than the cassette.
5. **Compatibility with High-End Campagnolo Drivetrains**
These sprockets are designed to work seamlessly with other **Campagnolo Record/Electron components**, such as the **Chorus or Centaur** derailleurs, ensuring optimal performance and longevity when paired with matching parts.
6. **Reduced Chain Wear**
The **low-friction design** of the carbon fiber sprockets helps minimize chain wear, extending the lifespan of both the cassette and chain. This can lead to cost savings in the long run.
7. **Exclusive to Campagnolo s Top-Tier Lineup**
The CS9-RE is part of Campagnolo s **Record** series, which is their flagship line. This means it benefits from cutting-edge engineering and is backed by Campagnolo s reputation for quality and innovation.
8. **Minimal Chain Stretch**
Carbon fiber sprockets experience less elongation over time compared to steel, meaning your gearing remains more accurate for longer.
---
### **Cons**
1. **High Cost**
The **CS9-RE127 cassette** is one of the most expensive 11-speed cassettes available, often costing **$300 $400 or more**. This makes it a significant investment, especially for casual or recreational riders who may not fully utilize its benefits.
2. **Limited Availability and Installation Complexity**
Installing carbon fiber sprockets requires **specialized tools** (e.g., a **cassette lockring tool with a carbon-safe design**) and **careful handling** to avoid damaging the sprockets. Improper installation can lead to **chain skips or premature wear**.
3. **Potential for Damage from Impact**
While carbon fiber is strong, it is **not indestructible**. Dropping the cassette, hitting a curb, or riding over rough terrain can cause **micro-fractures or delamination**, which may not be immediately visible but can compromise performance. Unlike steel, damaged carbon fiber sprockets are often **not repairable** and must be replaced.
4. **Compatibility Issues with Non-Campagnolo Parts**
While the CS9-RE works well with other Campagnolo components, mixing it with **Shimano, SRAM, or other brands** may lead to **shifting inconsistencies** or **increased wear** due to differences in tooth profiles and tolerances.
5. **Maintenance Sensitivity**
Carbon fiber sprockets require **gentler maintenance** than steel. For example:- **Cleaning** should avoid abrasive materials that could scratch the surface.
- **Lubrication** must be applied carefully to prevent excess buildup that could affect shifting.
- **Chain wear** should be monitored closely, as carbon sprockets can wear out faster if paired with a worn chain.
6. **Resale Value Depreciation**
High-end carbon components like these **depreciate quickly**. If you plan to upgrade your drivetrain in a few years, the resale value may not justify the initial cost.
7. **Not Ideal for Heavy-Duty or Gravel Use**
While the CS9-RE performs well on road bikes, it is **not designed for gravel, cyclocross, or mountain biking**, where mud, debris, and rough terrain can accelerate wear or damage.
8. **Learning Curve for Riders**
The **ultra-lightweight nature** of carbon sprockets can feel different from steel, requiring riders to adjust to the **lighter feel** and slightly different shifting characteristics.
---
### **Conclusion**
The **Campagnolo CS9-RE Record 11-speed cassette (12-27)** is a **premium product** that excels in **performance, weight savings, and shifting smoothness**, making it ideal for **competitive racers, time trialists, or serious cyclists** who prioritize every gram and seamless gear changes. However, its **high cost, fragility, and specialized maintenance requirements** make it less suitable for **budget-conscious riders, casual cyclists, or those who frequently ride in harsh conditions**.
If you are **certain about your commitment to high-performance road cycling** and can afford the investment, the CS9-RE is one of the best cassettes available. However, if you are on a tighter budget or ride in conditions where durability is more critical than weight savings, a **steel or aluminum alternative (e.g., Campagnolo Centaur, Shimano Ultegra, or SRAM Force)** may offer a better balance of performance and practicality.
---
### **Recommendation**
**Buy the CS9-RE127 if:**- You are a **competitive racer, time trialist, or serious cyclist** who rides primarily on smooth roads.
- You already own a **Campagnolo Record/Electron drivetrain** and want to maximize compatibility.
- You can **afford the high cost** and are willing to handle it with care.
- You prioritize **weight savings and shifting smoothness** over durability in extreme conditions.
**Avoid the CS9-RE127 if:**- You are a **recreational rider** or on a limited budget.
- You frequently ride in **muddy, rough, or off-road conditions**.
- You are not comfortable with **specialized installation and maintenance** requirements.
- You plan to **mix brands** (e.g., Campagnolo sprockets with Shimano/SRAM derailleurs).
- You expect to **upgrade your drivetrain soon**, as the resale value may not justify the cost.
For most **serious road cyclists**, the CS9-RE is a **worthwhile investment** if used appropriately. For others, a **mid-range steel or aluminum cassette** may provide better value without sacrificing too much performance.
Details:
Please see pictures.
part #: cs9 prices
- $92.85-$115.00
specifications ribicycl:
- brand: Campagnolo
- mpn: Cs9-re
- part type: Sprocket
- compatible brand: For Campagnolo
- color: Silver
- material: Aluminum, Steel, Titanium
- number of speeds: 11 Speed
- smallest sprocket: 12 Tooth
- largest sprocket: 27
- compatible bike type: Mountain Bike, Racing Bike, Recumbent Bike, Road Bike, Tandem Bike, Tandem Tricycle, Touring Bike
- country of origin: Italy
- item weight: 244.7g
- upc: 033148858228
seller ribicycl:
- city: Evansville, Indiana
- # reviews: 1812
- rating: 100.0%
general ribicycl:
- condition: Used
- Cycling > Bicycle Components Parts > Cassettes, Freewheels Cogs
payments ribicycl:
- wallet: Google-pay
- other
- credit card: Diners-club
offer ribicycl:
- options: Ship-to-home
- sold: 0
- started: May 22, 2026
- quantity: 1
- best offers: True
- availability: In Stock
returns ribicycl:
- policy: Returns Accepted
- paid by: Buyer
- method: Money back
- time: 30 Days
shipping ribicycl:
- class: Standard
- type: Calculated
- transit: 6-11 Days
- cost: $0.00
- service: USPS Ground Advantage
- carrier: USPS
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