Skip to content

Overview

What Makes the Shimano Altus FC-M311 a Reliable Triple Crankset?

The Shimano Altus FC-M311 is a 3x7/8-speed MTB crankset built for mountain bikes and commuters that need reliable, wide-range gearing without a high price tag. Aluminum crank arms keep weight reasonable while the riveted steel chainrings deliver the wear resistance and front shift quality that daily riding demands. The 48/38/28t range covers everything from a trail climb to a daily commute.

Square taper bottom bracket interface. A compatible BB is required and sold separately (check your frame for 68mm or 73mm shell width). Riveted chainrings are not replaceable individually. Compatible with 7- and 8-speed Shimano MTB drivetrains. MPN: EFCM311C888XL.

All the specs

MPN
EFCM311C888XL
Arm Length
170mm
Chainrings
48/38/28t (steel, riveted)
Speed
7/8-speed
Interface
Square taper
Chainline
50mm
Q-Factor
187.9mm
Arm Material
Aluminum
Chainring Material
Steel (riveted, not individually replaceable)
BB
Not included (square taper required, 68/73mm)

FAQ

Good questions

Get to know Shimano

There's more to Shimano than this one product. Our Shimano page has the full Shimano lineup we carry and more about the brand.

Visit the Shimano page →
Does a bottom bracket come included?

No. The FC-M311 requires a separate square taper bottom bracket. Check your frame's BB shell width (typically 68mm or 73mm MTB) and spindle length before ordering.

Can I replace the individual chainrings on the FC-M311?

No. The chainrings on the FC-M311 are riveted in place and are not individually replaceable. When the rings are worn, the full crankset needs to be replaced.

What drivetrains is the FC-M311 compatible with?

The FC-M311 is compatible with 7- and 8-speed Shimano MTB drivetrains using a matching 3x front derailleur and 7- or 8-speed rear shifter and cassette.

Reviews

What riders say about the Lab

4.9 ★★★★★ 119 Google reviews of Dialed Cycling Lab Read all reviews on Google ↗
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
Scott Phillips · Google review
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
Google review
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Google review

Questions about this one?

Not sure on size, compatibility, or whether this is the right one for you? Ask us. A real person here will answer.

You are asking about Shimano Altus FC-M311 Crankset - 170mm | 7/8-Speed | 48/38/28t | Square Taper

Goes straight to the Lab with the product you were looking at attached. No newsletter signup.