microSHIFT
RD-M21S
M21 Rear Derailleur
Shipping calculated at checkout.
Pickup available at Sierra Bicycle Supply
Usually ready in 2-4 days
FREE shipping on any order over $99 in the US lower 48!
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microSHIFT
Pickup available at Sierra Bicycle Supply
Usually ready in 2-4 days
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M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs.
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arrived on time but does require signature which I was not aware. Happy with product and service
Lightweight but question it's durability will likely return
Great petals that can be used with plain shoes or road bike cleats
Love the bike. So lightweight and fast. Team built the bike quickly and arrived without any issues. Would definitely recommend.
Here is how I am using it.
- Customizable displays for ...
- Heart Rate Sensor
- Garmin Pedal Power Meters
- Lights control
- Cadence Sensor
- Speed Sensor
- DOES NOT WORK WITH SAMSUNG WATCH 8 CLASSIC
- Records Route Creation but need to be careful with saving rides as not doing two rides back to back = lost
- does not come with a one hundred twenty page manual.But I was able to find a pdf file online
Can’t recommend SBS enough. Fantastic pricing, great communication, and prompt shipping.
I saw the feedback around certain items being out of stock… not sure why folks just don’t pick up the phone. I called to confirm availability. The team was polite and quickly confirmed the bike was on the floor. Quick ordered it, shipped and received. Packaged flawlessly.
Easy transaction and I would highly recommend working with them.
This is my do-it-all bike. It does fast XC, decent-sized chunk, and climbs like a mountain goat. The best part though is the service and sales process with Sierra Bicycle Supply. Those guys are the best!
We love the staff and store so much that we purchased our BMW motorcycles and Specialized bikes from this dealership.
Whether riding at 150 mph+ on your motorcycle or just 40 mph+ on your ebike, you'll be glad you bought them from this store
High Quality, at a Great Price. Most importantly, the boss is very happy about it. Just in time before Father's Day, so I could earn some credits.
It comes with Headset, cable plugs for Wireless settings, and the MRP Chainguide. (thou, I had to put a spacer to make it fits for the 52mm chainline...)
