Restore sharp, dependable shifting to your trail drivetrain with the genuine Shimano SLX FC-M660 44T Outer Chainring. Specially engineered as the replacement outer ring for 3×9-speed SLX HollowTech II cranksets, this aluminum component features custom SG-X shift ramps and pickup pins for smooth chain transfers during high-torque pedaling.
Key Features
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SG-X Technology: Precision-engineered shift ramps and patented spike pins ensure rapid, reliable gear changes under load.
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Lightweight Aluminum Build: Constructed from anodized aluminum for optimal stiffness-to-weight balance and efficient power transfer.
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Direct OEM Fit: Factory-original replacement part engineered for FC-M660 9-speed triple cranksets.
Specifications
| Attribute | Details |
| Series | SLX M660 (FC-M660) |
| Tooth Count | 44T |
| Position | Outer Ring (for 3x Triple Setups) |
| Bolt Circle Diameter (BCD) | 104 mm |
| Bolt Pattern | 4-Bolt Standard |
| Drivetrain Speed | 3×9-Speed |
| Material | Anodized Aluminum |
| Color | Silver / Black |
Compatibility
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Crankset: Shimano SLX FC-M660 (3×9-speed triple MTB crankset)
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Cross-Compatibility: Fits standard 104mm 4-bolt mountain bike cranksets requiring a 44T outer position ring.
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Chains: Compatible with standard 9-speed HG chains.





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