MICROSHIFT RD-M21SS Rear Derailleur Cage 4710495436388 6/7-SPEED

( Brand: Microshift ), ( Manufacturer Part Number: RD-M21SS ), ( Part Type: Derailleur Short ), ( Manufacturer Warranty: 4 Years ), ( Color: Black ), ( Compatible Bike Type: Mountain Bike, Road Bike ), ( Number Of Speeds: 6 Speed ), ( Item Width: 8.00 In ), ( Item Weight: 0.6800 ), ( Derailleur Cage Length: Short Cage ), ( California Prop 65 Warning: Standard ), ( UPC: 710495436388 )

Review MICROSHIFT M21 Rear Derailleur 6/7-speed Super Short Cage Black

Microshift RD-M21SS M21 Rear Derailleur (6/7-speed Cage)

The Microshift RD-M21SS M21 Rear Derailleur is an exceptional addition to any cycling setup, offering smooth and reliable shifting for riders seeking a budget-friendly alternative to high-end models. This 6/7-speed derailleur features a durable and sleek design that's perfect for various cycling disciplines, including road, touring, and hybrid bikes.

Crafted with precision engineering, the M21 derailleur boasts a robust and lightweight aluminum cage that's designed to handle the rigors of everyday riding. Its compact design ensures a snug fit on your bike, while the adjustable cable tension and limit screws allow for fine-tuning to suit your specific gear setup and riding style.

One of the standout features of the M21 derailleur is its easy-to-use, tool-free adjustment system. The B-tension screw allows for fine-tuning of the derailleur's movement, ensuring accurate and precise shifting, even under load. Additionally, the wide pulley wheel and long cage design accommodate a wide range of gears, making it suitable for everything from flat city rides to challenging mountain terrains.

The Microshift RD-M21SS M21 Rear Derailleur is not just about performance; it also boasts an attractive aesthetic. Its sleek, minimalist design complements the look of any bike, while its black finish provides a stealthy, understated appearance. With its reliable performance, easy adjustments, and budget-friendly price, the M21 derailleur is an excellent choice for cyclists who demand quality without breaking the bank.

Upgrade your bike's shifting performance today with the Microshift RD-M21SS M21 Rear Derailleur. Experience the smooth, efficient, and responsive shifting that will enhance your cycling experience, whether you're commuting to work, exploring new trails, or training for your next big race.

**Microshift RD-M21SS M21 Rear Derailleur 6/7-Speed Cage Analysis**

1. **Affordable**: The Microshift RD-M21SS is a cost-effective solution for cyclists seeking a reliable rear derailleur without breaking the bank.

2. **Versatile**: It is compatible with both 6-speed and 7-speed drivetrains, offering flexibility for different bike configurations.

3. **Lightweight**: Weighing around 230 grams, this derailleur is a good choice for those who prioritize a lightweight setup.

4. **Adjustable**: The derailleur features a clutch mechanism to reduce chain slap, and it has adjustable cable tension and limit screws for fine-tuning shifts.

1. **Performance Limitations**: Compared to higher-end derailleurs, the Microshift RD-M21SS may not offer as smooth or precise shifts, especially under heavy load or when climbing steep hills.

2. **Durability Concerns**: Some users have reported issues with the derailleur's durability over time, such as cable fraying or the derailleur body bending.

3. **Customer Support**: Microshift's customer support has been reported to be less responsive compared to other brands, which could be a concern for users encountering issues.

**Conclusion**: The Microshift RD-M21SS M21 Rear Derailleur 6/7-Speed Cage is an affordable and lightweight option for budget-conscious cyclists who prioritize versatility and adjustability. However, potential buyers should be aware of its limitations in terms of performance and durability compared to higher-end derailleurs. If you can spend a bit more or need a derailleur with superior performance and durability, it might be worth considering other brands. If affordability is your primary concern, the Microshift RD-M21SS could be a good choice, but be prepared for potential trade-offs in terms of shift quality and longevity.

Details:

Lot Box #109. Item is used. Ships with USPS or UPS. No idea if it functions.

part #: rdm21ss prices

• $13.99-$23.54

specifications ribicycl:

• brand: Microshift
• mpn: Rd-m21ss
• part type: Derailleur Short
• manufacturer warranty: 4 Years
• color: Black
• compatible bike type: Mountain Bike, Road Bike
• number of speeds: 6 Speed
• item width: 8.00 In
• item weight: 0.6800
• derailleur cage length: Short Cage
• california prop 65 warning: Standard
• upc: 710495436388

returns ribicycl:

• time: 30 Days
• paid by: Seller
• method: Money back
• policy: Returns Accepted

shipping ribicycl:

• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• transit: 4-11 Days
• cost: $0.00
• type: Calculated

payments ribicycl:

• credit card: Visa
• other
• wallet: Paypal

offer ribicycl:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• sold: 0
• started: October 20, 2025

general ribicycl:

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

seller ribicycl:

• # reviews: 569
• rating: 98.6%
• city: Rancho Cucamonga, California

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