Description
Upgrade Your Bike with the Shimano Tourney RD-TY300-SGS Rear Derailleur – Built for Smooth, Reliable Shifting
Enhance your cycling experience with the Shimano Tourney RD-TY300-SGS rear derailleur, specifically designed for 6 and 7-speed mountain bike setups. Featuring advanced SIS (Shimano Index Shifting) technology combined with Double Servo, this long cage derailleur delivers precise, smooth gear transitions that keep you confident on every ride.
Materials & Construction
Constructed with durable materials in a sleek black finish, the Shimano RD-TY300-SGS is engineered for longevity and consistent performance. Its robust design ensures it can withstand rugged terrain and demanding riding conditions, making it an excellent choice for mountain biking, commuting, or recreational rides.
Performance & Engineering
Designed with a Long Cage configuration, this derailleur optimizes chain retention across a wide gear range, accommodating up to a 34-tooth largest sprocket and a chain wrap capacity of 43 teeth. The SIS Rear Index Shifting System guarantees smooth, accurate shifts by perfectly aligning the derailleur with each sprocket, minimizing chain slip and enhancing ride stability. Double Servo technology allows the guide pulley to track closely alongside the cogs, ensuring precise gear changes whether you’re climbing steep hills or cruising on flat terrain.
Components & Technology
Equipped with 13-tooth upper and lower pulleys, the derailleur maintains optimal chain tension and reduces derailleur wear. Compatibility with Shimano Mountain rear shifters and HG 6/7/8-speed chains makes it versatile and easy to integrate into existing drivetrains. Its 10×1 standard derailleur mount ensures straightforward installation on most mountain bikes.
Style & Use Case
With its sleek black aesthetic, the Shimano Tourney RD-TY300-SGS complements various bike styles, from entry-level mountain bikes to casual commuters. Its long cage design is ideal for multi-gear bikes that require a wider gear range, making it perfect for off-road adventures, urban cycling, and leisure rides where reliable shifting performance is paramount.
Innovative Features & Differentiators
What sets the Shimano RD-TY300-SGS apart is its combination of SIS Rear Indexing and Double Servo technologies, delivering consistently smooth and precise shifts. Its design keeps the guide pulley at an ideal distance from each sprocket, ensuring optimal alignment and performance for each gear change. Whether you’re tackling rugged trails or enjoying relaxed rides, this derailleur provides the dependable performance you need.
Optimize your bike’s shifting performance with the Shimano Tourney RD-TY300-SGS Rear Derailleur – the perfect upgrade for a smoother, more confident ride.
- Shimano Tourney RD-TY300-SGS Rear Derailleur designed for 6 and 7-speed mountain biking and city commuting, ensuring smooth and reliable gear shifts across diverse terrains.
- Constructed with durable, high-quality materials and featuring a long cage design to accommodate up to a 34-tooth largest sprocket, providing excellent gear range for versatile riding conditions.
- Equipped with Shimano’s SIS Rear Indexing system and Double Servo technology, this derailleur delivers precise, seamless shifts and optimal pulley tracking, reducing chain slack and improving drivetrain efficiency.
- Compatible with HG 6/7/8-speed chains and featuring a sleek black finish, this derailleur is optimized for Shimano mountain bike shifters and 10×1 standard rear mounts, offering easy installation and maintenance.
- Ideal for riders seeking dependable performance with advanced shifting technology in a lightweight, performance-engineered component-perfect for mountain trails, commuter bikes, or recreational cycling.
| Largest Cog | 34 |
| Color | Black |
| Rear Der/Shifter Compatibility | Shimano Mountain |
| Rear Derailleur Mount Type | 10×1 Standard |
| Drivetrain Speeds | 6 |
| Drivetrain Speeds | 7 |
| Chain Wrap Capacity (teeth) | 43 |
| Cage Length | Long |






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