⚡ Shift into the future with precision and power!
The RD-TY21B is a high-performance rear derailleur designed for 6/7 speed bikes, crafted from durable aluminum alloy with a direct mount system. Compatible with a wide range of bicycles including mountain, commuter, cruiser, and folding bikes, it delivers reliable, smooth gear changes and a secure fit for enhanced riding stability.
| Manufacturer | Relwears |
| Item Package Dimensions L x W x H | 5.47 x 5.39 x 2.76 inches |
| Package Weight | 0.34 Kilograms |
| Brand Name | Relwears |
| Warranty Description | 1 |
| Model Name | TY21B Rear Derailleur |
| Included Components | NO |
| Size | 6/7 Speed |
J**A
E bike parts
I received it on time and it was just what I needed to fix my grandsons e-bike
J**A
Buy it!
I got an estimate of $100 to fix this part at a bike shop. I bought this and replaced it in less than an hour. I’m so happy!!!
D**K
Works ok.
Works ok. I've seen better and seen worse.
J**P
Newer style
As far as 'Universal' it is not...It goes on newer models, that have the slotted connection (if pictured) on the left top (looking at brand name),If that is damaged, it was suggested and 'Worked' using the older style that connects with nut holding tire on.
W**S
Lowest end Shimano. Buy Upgraded versions
Low end product, look for higher end derailleur. TX800 is better and only a few dollars more. Just make sure to get hanger brackets if necessary. Two of mine broke.
A**O
Bike durailer
Works awesome
S**E
Shimano rear derailleur 6/7/8 speed
This product works great bike rides smooth as it should
C**R
It's a cheap Shimano - just what I needed and OEM
Excellent, a new Shimano RD-TY21B - an exact duplicate of the mangled one I am replacing on a Jasion CB1 ebike I rescued from a guy on Facebook Marketplace. Very happy to have it cheaper even than my local bike shop and almost as fast to have it in hand.
Trustpilot
3 weeks ago
3 days ago
