Shimano Deore XT FC-M8100 Crank Set - 12 Speed - Without Ring
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Leisure Lakes BikesShimano Deore XT FC-M8100 12 Speed 52mm Crankset without Ring Black
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Shimano Deore XT FC-M8100 12 Speed 52mm Crankset without Ring BlackFree delivery in 1–3 days£154.99Visit shop →
Product Information
Full details
The Shimano Deore XT FC-M8100 crankset is engineered for serious mountain bikers seeking a high-performance, lightweight drivetrain component that excels in competitive conditions. Featuring forged HollowTech II construction, it provides an exceptional strength-to-weight ratio for efficient power transfer, though riders should note that it requires specific compatibility with 12-speed HG+ MTB chains and is sold without chainrings.
All features
| Model Part Number | FCM8100C |
|---|---|
| Brand | Shimano |
Extended Product Information
FAQs
Does this crankset include chainrings?
No, the FC-M8100 is sold as a crankset without chainrings.
What chain type is compatible with this crankset?
This crankset is compatible exclusively with 12-speed HG+ MTB chains.
Is this compatible with 148mm Boost spacing?
Yes, the 52mm chainline design is specifically built to accommodate 142mm and 148mm rear axle widths.
Can I install this myself?
While technically possible, professional installation is recommended to ensure the bottom bracket is faced and fitted perfectly.
What material is the crank made from?
The crankset features forged HollowTech II aluminum construction for a balance of strength and weight.
Troubleshooting
Audible creaking coming from the bottom bracket area
Verify that the bottom bracket is correctly torqued and that the threads/interface were properly greased during installation.
Shifting feels hesitant or rough
Ensure you are using a compatible 12-speed HG+ MTB chain and check for proper chainring alignment.
Pros and Cons
Pros
- Excellent strength-to-weight ratio
- High structural rigidity for efficient pedaling
- Compatible with modern Boost (148mm) rear axle spacing
- Durable forged aluminum build quality
Cons
- Chainrings are not included
- Professional installation recommended for bottom bracket
- Compatible only with 12-speed HG+ chains
Setup, Compatibility & Care
Installation of the FC-M8100 should be approached with precision. Because the HollowTech II bottom bracket requires accurate facing and fitment to achieve peak performance, it is strongly recommended that a professional bike shop perform the initial installation. Ensure your frame uses a compatible bottom bracket shell and that your rear axle spacing is 142mm or 148mm to match the 52mm chainline. For maintenance, keep the crank bolts torqued to manufacturer specifications and ensure the bottom bracket bearings are regularly inspected for debris or wear, especially after riding in wet or muddy conditions.