Shopping Cart

Your cart is empty.

Your cart is empty.

Shimano MF-TZ31 Tourney Freewheel (14-34T Mega 7 Speed)

Free shipping on orders over $29.99

$29.98

$ 12 .99 $12.99

In Stock

About this item

  • Indexed shifter compatible
  • Shimano Reference Number: MF-TZ31


Shimano Tourney freewheel are all designed to work with indexed shifters at a budget price.


Gregory R Pate
Reviewed in the United States on January 27, 2025
Excellent
Jackdan
Reviewed in the United States on December 14, 2024
Works great easy install well made
melanie
Reviewed in the United States on June 9, 2019
Upgraded the stock 7 speed to this and it helped emmensely on the hills around here (Pittsburgh). Being that where I live there is a hill just around the corner everywhere it was so nice to change into this 7 speed where I had the 34t for the hill climbs. Works great and was easy to install with the freewheel removal tool.
chevy
Reviewed in Canada on April 13, 2019
It’s very easy to clime up hills
Mark Twain
Reviewed in Canada on December 19, 2017
Good freewheel but slightly heavier than the Falcon one it replaced off the Mongoose Dolomite.
Matt Montréal
Reviewed in Canada on April 28, 2017
Good price, good product, delivery was a little bit long...
drp103
Reviewed in the United States on November 7, 2014
I bought two of these items, one locally and one here on Amazon.I replaced all of the old, worn-out drivetrain components on two different, decade-old TREK mountain/comfort bikes with new components. Both bikes featured the old MegaDrive freewheel cassettes, and even though the name is different, thankfully these new MegaRange cassettes are a perfect replacement over the old MegaDrive ones.The old cassettes have MegaDrive written on the tallest gear. These new ones have MegaRange written on the tallest gear, just like in the photo here on Amazon. I was having some doubts about compatibility when I noticed that. Fortunately, it matters not, because like I said earlier, these new MegaRange cassettes are a perfect replacement over the old MegaDrive ones. And to top it off they are much improved with a higher standard of build quality. So, if you are having doubts like I was, then fear not, and purchase with confidence.After riding around town a few times I noticed one big improvement. I noticed right away that when I reversed my pedaling, the new cassette does not make that annoying clicking sound. It's nearly dead quiet in fact, and it feels really smooth, too, compared to the old cassette. My riding experience overall is much better. NICE! Shifting gears seems to have improved too, although that's probably because all of the components are brand new.The old cassette should be (must be) taken off using a splined tool made specifically for this task. Buy one here on Amazon. Fortunately, the same tool can also be used to install (or take off for that matter) the new cassette. The cassette threads on to the hub clockwise, just in case you forgot. I had trouble trying to remove one of the old cassettes even after using a 1/2 air impact driver with 150 psi, and ended up having to get a whole new rear wheel; over nearly ten years of hard-pounding riding, it had gotten tightened on to the extreme!This is a very fine product, much improved over its predecessor. KUDOS Shimano. Highly recommended!
K. Godoy
Reviewed in the United States on January 30, 2013
On my first attempt at climbing steep hills with the stock DNP freewheel I quickly ran out of steam and resorted to "hike-a-bike". Sure I'm also overweight and out of condition but disappointed as well that I couldn't join the other people that were climbing with little effort (or so it seemed to me). That is until I ran into this freewheel.I figured, what the heck, it's only $14! Well, I also had to buy the FR-1 tool to do the work myself but I figured it beats taking it to a LBS (local bike shop) which will charge me many times more for labor. While I was at it, I decided to also replace the stock chain because it was slightly bent with a new KMC Z50 and with that purchase came a chain break tool.I'm glad I did it myself! It only took about 15 minutes to replace the freewheel and chain and didn't need to readjust the rear derailleur because it shifting perfectly fine! I'm not sure if that will be the case with other bikes so don't take my word for it.I didn't get a chance to test it out until a week later due to rain, but I took it to the local "The Fullerton Loop" - which is 12 miles of easy to moderate climbs. It had just rained in the morning so the whole route had plenty of mud. With this freewheel I had no problem keeping up with others that were riding $2K+ bikes whether it was through mud, a steep climb or steady uphill.I'm 5'11" and currently weighing in at 250 lbs so I'm not a small guy. The point is that with this freewheel I was able to take on some steep climbs which has motivated me to continue doing this newly found love for mountain biking. With time I will get in better condition and hopefully lose some weight and HAVE FUN doing so.Is it for everyone? Probably not. But it sure is if you need that extra help like I did. AND it was easy to install by myself.Here are the things I purchased:$13.97 Shimano Z31 freewheel$8.05 KMC Z50 chain$7.41 FR-1 Park Tool$15.95 Park Tool Chain Tool$45.38 + tax totalThat's probably much less than I would have paid had I gone to my LBS - so I'm happy.
murphtron
Reviewed in the United States on January 16, 2013
Kids bikes are poorly designed and use cheap, old component styles. And they have really poor gear ratios for little mountain bikers and are absurdly heavy. Little kids are at a severe disadvantage when climbing dirt trails! This Shimano freewheel is the only option for kids rear hubs which invariably use the old-style threaded freewheels. I mean, really, these things have been out of date since the early 90s.So, you can buy this freewheel, thread it onto the existing rear hub, and replace the rear derailleur and shifters (usually kids bikes have short cage derailleurs and 6 speeds). Will cost about $50 in parts using lower-mid range Shimano or Sram, and another $50 at your local bike shop if you don't have the mechanical chops. Yes, that's about 50% of the cost of the bike, but at least your kid can now climb reasonably steep dirt trails.A better option is to go 8+ speeds, but threaded cassettes are not available, so you'd need to rebuild the rear wheel, which will cost at minimum $150 for parts and labor alone. So I chose the cheaper option.
Recommended Products

$39.95

$ 17 .99 $17.99

4.8
Select Option

$38.99

$ 20 .99 $20.99

4.7
Select Option

$17.08

$ 7 .99 $7.99

4.7
Select Option

$35.09

$ 16 .99 $16.99

4.6
Select Option

$31.39

$ 14 .99 $14.99

4.6
Select Option

$99.00

$ 46 .99 $46.99

4.4
Select Option

$65.50

$ 28 .99 $28.99

4.5
Select Option