Shimano M5100 Deore Crankset
- 170 mm crank arms
- 30T chainring
- 10 or 11 speed single-ring setup
- 52 mm chain line
- Aluminum two-piece construction
- Bottom bracket parts not included
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A single-chainring Deore crankset in two-piece aluminum for ten or eleven speed drivetrains. The bottom bracket is not included.
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ASIN: B08BF74KJKModel: EFCM51001CXA0Category: Cranksets
Overview
A single-ring trail drivetrain is where this crankset belongs, using a two-piece aluminum body for rigidity and simpler installation and maintenance. The title specifies arm length, chainring size and the chain line it is built for.
A clear spec list and a Deore build suit riders who already know their bottom bracket and want a one-by crankset. The listing leaves out the bottom bracket, and some data fields, such as the mount type, look unreliable.
Who it's for
Trail riders converting to a single chainring, and those already owning a compatible bottom bracket, get a Deore crankset at known arm length. Anyone who wants a double ring setup, or a complete kit with bearings, should look elsewhere.
Pros and cons
- Two-piece aluminum construction
- Simple install and upkeep
- Clear arm and ring sizes
- Single-ring Deore layout
- Bottom bracket not included
- Chainguard status is unclear
- Some spec fields look unreliable
Performance notes
The chain line has to match the cassette and frame so the chain runs straight across the range. Arm length sets the leverage and clearance, and the ring size sets the gearing together with the cassette.
Where it stands among cranksets
- #2 most-searched brand and model of the 15 cranksets lines we track (by search demand, not sales).
From the specs of the 15 cranksets we list; not a test result.
Specifications
| Model | EFCM51001CXA0 |
|---|---|
| Dimensions & fit | |
| Chainring | 30T |
| Crank length | 170 mm |
| Item weight | 3.4 pounds |
| Arm Length | 170mm, 175mm |
| Bolt Circle Diameter | 96mm Shimano asymmetric |
| Capacity & performance | |
| Speeds | 10 or 11 speed |
| Construction & materials | |
| Color | Black |
| Material | Aluminum |
| Construction | Two-piece |
| Other details | |
| Chain line | 52 mm |
Frequently asked questions
Is the Shimano M5100 a double or triple crankset?
No. The description says it is a one-by ten or eleven speed crankset with a single chainring.
Does it include a bottom bracket?
No. The title says without BB parts.
What crank arm length is it?
The title gives 170 mm.