Quick Summary
The VERKSTAD RD-TY21B is a black, hanger-mount rear derailleur listed for 6/7-speed bicycles. It has 11T pulleys and a stated 34T maximum capacity. Confirm the bike’s hanger and drivetrain requirements before selecting it as a replacement.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Model | RD-TY21B; check the model when matching a replacement part. |
| Drivetrain | Listed for 6/7-speed setups. Confirm the bike’s drivetrain configuration. |
| Mount | Hanger mount, not direct mount. The bike needs a compatible derailleur hanger. |
| Pulleys | 11T. |
| Maximum capacity | 34T; compare this stated capacity with the bike’s requirements. |
| Material and color | Aluminum alloy, black. |
What to Compare Before Buying
Check the number of rear speeds and the mounting style on the bike. A 6/7-speed designation does not by itself confirm compatibility with every shifter, cassette or freewheel, or frame.
Compare the stated 34T maximum capacity with the bike’s drivetrain requirements. If you are unsure how that rating applies to your setup, confirm the exact requirements before choosing a replacement.
Compatibility, Size and Fit
The named applications include mountain, commuter, cruiser and folding bikes, but those broad categories do not establish fit for every model. Check that the frame uses a compatible hanger mount and verify the existing derailleur and drivetrain configuration.
Setup and Correct Use
The stated installation sequence is mounting, adjusting the limits, tensioning the cable and fine-tuning. Follow the instructions for the exact bicycle and derailleur for installation and adjustment; consult a qualified bicycle mechanic if you cannot confirm the correct setup.
Before You Decide
Confirm the RD-TY21B model, 6/7-speed configuration, hanger-mount fit and the bike’s requirements relative to the stated 34T maximum capacity.
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