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Shimano MF-TZ21 7 Speed Freewheel

Item #: CS216B00
USD$8.99 SAVE 36% USD$13.99 msrp
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Shimano MF-TZ21 7 Speed Freewheel

Shimano MF-TZ21 7 Speed Freewheel

Keep that rig going with a quality Shimano MF-TZ21 7 Speed 14-28 replacement freewheel.

Note that this is a freewheel and not a cassette. It is only compatible with 7 speed threaded hubs.

Features:

  • 7 Speeds
  • Tooth count = 14, 16, 18, 20 , 22, 24, 28
  • Steel Construction
  • Requires Freewheel Tool for installation and removal
4.5 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
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1 Stars
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Inexpensive replacement
For the price, you cant go wrong.

PROS: Precise Shifting, Easy To Install
January 27, 2016
Location:
Wellington, FL
Good Freewheel, great price.
Fast Shipping, No extra charges upon delivery!

PROS: Easy To Install

BEST USES: Hybrid Biking, Mountain Biking
October 24, 2016
Location:
Toronto, ON
Nice freewheel; but they are gray not silver as shown
These are fine freewheels but not the color pictured. I was looking for a silver finish, this one is gray

PROS: Easy To Install, Durable

CONS: Heavy
April 5, 2016
Location:
Guilford, Ct United States
Fine freewheel; but it's is gray not silver as shown
This a fine; if heavy freewheel. The color is gray not silver as shown

PROS: Durable, Easy To Install

CONS: Heavy
April 6, 2016
Location:
Guilford, Ct United States

Q & A

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Browse 1 question Browse 1 question and 1 answer
I want to get a new derailleur too. What are my options and does the freewheel require a long cage derailleur? Thanks
Thomas on Jul 27, 2016
BEST ANSWER: You are talking about how much chain slack your rear derailleur can handle - its capacity. it is measured by adding the the difference between your biggest rear sprocket and smallest, plus the difference between your chain rings.

So your choice on how wide a spread you get on your cluster/freewheel/casette added to your current chain ring difference will inform whether your need a long throw rear derailleur.

As a side note - depending on how you use your gears can effect whether you need a long throw as well. The most slack comes from using your inner chain ring with your outer rear sprocket. The most stretch - outer chain ring to inner rear sprocket Most mechanics don't advise that you use either of the extreme alignments. We like straighter alignment of the chain between the front and back to lessen wear and some chain jump issues. So most mechanics generally recommend to the general cyclist that you use the inner chain ring with the inner half of the rear sprockets (plus 1 or 2 depending on how many sprockets you have) , and the outer chain ring with the outer half of the rear sprockets (plus 1 or 2 etc). That gives you over-lapping use in the mid ranges and avoids the chain angles of the most extreme combinations - meaning a shorter chain is okay and then less chain slack to pick up. BUT it also means if you ever try to go big - big you can jam your drivetrain, you will always have enough for small-small but big-big? Expect a jarring realization that you didn't get that long throw...

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.