SHIMANO Altus FC-M311 3×7/8 Crankset

9 reviews for SHIMANO Altus FC-M311 3×7/8 Crankset

1. 

   carlos – 7 January 2025

   quality low cost crankset
   This is a good low cost , high quality crankset . It is easy to install and does the job of giving you a nice gear range. Works as well as cranksets costing 3 times as much. With the price of bike parts being what they are this is a good value.

2. 

   Amazon Customer – 7 January 2025

   GT Aggressor Pro perfect replacement
   My wife bought me a GT Aggressor Pro for an early Father’s Day present. Was supposed to be shipped to the store, but was shipped to the house. I don’t know if I cross threaded the pedal or it was just a bad crank, but halfway through our first 7 mile ride, the pedal went wonky and eventually stripped out completely. This set was a perfect match. Two smaller rings have a couple fewer teeth, but I’m not worried about it. Actually seems to shift smoother with new crankset. Paired with a crankset pulling tool, 5-10 minute job. Will see how it holds up, but for now, seems perfect.

3. 

   Aardvark – 7 January 2025

   Genuine Shimano Crankset better than my Previous FC-M311
   The inner two gears of my crankset had worn out and the assembly needed replacement. Installation was easy with the most difficult part pulling off the old crankset with a crankset puller as they were on pretty tight after being installed for many years. I noticed this new FC-M311 crankset had an improvement over my previous FC-M311. There is now an outer guard (picture) next to the outer most gear that keep the chain from slipping off and onto the pedal. This is a problem I sometimes had with the previous crankset and I see Shimano made a design change to address that problem.

4. 

   R. Evans – 7 January 2025

   For the price and functionality, you cannot go wrong
   Be ready to adjust and tune your front derailleur or bring your bike to a shop.In my case I need to adjust bike front derailleur to accommodate the size [same size 175/42-32-22, but the stock is diff brand].In fact, I will not be able to adjust to the smallest gear since my stock derailleur cannot go that low. For now I only use 1 and 2, which works for me since I seldom used the lowest gear. I may need to buy a new front derailleur someday. After tuning, shifting is smooth and worked as expected. On the side note, the construction looks sturdy and the added chain guide is a plus. For the price and functionality, you cannot go wrong.

5. 

   matt151617 – 7 January 2025

   Good replacement for an old Specialized
   Used this to replace the crankset of the same size on a 25 year old Specialized mountain bike. The old crankset was rusted and missing several teeth where they had been bashed on logs/rocks. I also really wanted to add a bash guard/chain guard since the old one had nothing and my pants and shoelaces would get caught on the crankset. The old crankset was riveted on so there was no way to add a bash guard.The old crankset was a b*tch to get off; I used a removal tool but the handle was too small. If I had to do it again, I would have cut off the bottom bracket with a hacksaw/Sawzall instead of messing with removal tools, vices, and hammers. I reused the old pedals since there was nothing wrong with them.The front derailleur did need adjusting; as is, it crashed in to the guard. I had to raise the derailleur up and then adjust the high and low screws to get the shifting to work properly. If you don’t know how to do this just watch a few YouTube videos.

6. 

   Al Owski – 7 January 2025

   Great Value for the Money, But…
   This replaces the obsolete Shimano MC-08 crankset on my 20 year old Trek 4500. The original 113mm spindle bottom bracket which is not long enough to clear this crankset. You’ll need a bottom bracket that is 10mm longer: BB-UN300 Bottom Bracket – English, 73 x 123mm Spindle. You will also need an Altus compatible derailleur, a SHIMANO FD-M310. Use the appropriate tooling. When replacing the bottom bracket, discard the front derailleur mounting plate. The Altus derailleur clamps to the frame.

7. 

   Motavator – 7 January 2025

   Perfect replacement for my Merax 26″!
   Great crankset!! Aluminum just like the oem ones I had on my bike before I stripped the pedal threads. The replacement and installation was easy-peasy, though it is VERY helpful to have a crankset puller tool. You can find those on Amazon for around $10 more or less. This crankset comes pre-greased, but it doesnt hurt to add more if you want to. Since I installed them, my bike has been running great as new. No problems what so ever. The only downfall I can think of for this crank set is that it did not come with covers/clips to prevent debris from entering the bottom bracket.

8. 

   Shanold – 7 January 2025

   So far so good shifts well!
   Good replacement for my fatbike. shifting works well. Not as good as my main bike but that crankset was double the price. Good replacement for a basic bike.

9. 

   Eternaldawg – 7 January 2025

   this was my first buy with this company. The item arrived ahead of schedule and worked and looked great. Highly recommend them.