Shimano Deore XT SM-CRM85 34T Direct-Mount Chainring — 1x12-Speed, Narrow-Wide,
Shimano Deore XT SM-CRM85 is a genuine direct-mount 1x chainring for 12-speed XT M8100-series drivetrains. This is the 34T version in black.
Genuine Shimano Deore XT — brand new.
Will it fit? A direct-mount chainring for Shimano 1x cranks that accept SM-CRM direct-mount rings — FC-M8100 / FC-M8120 / FC-M8130 (Deore XT). The narrow-wide tooth profile (Shimano Dynamic Chain Engagement+) is optimized for 12-speed Hyperglide+ chains. Chainline is set by your crank (Boost / non-Boost). Crank arm is not included.
Key Specifications
Brand | Shimano |
Series | Deore XT (M8100) |
Model | SM-CRM85 |
MPN | ISMCRM85A4 |
UPC | 192790443706 |
Type | Direct-Mount Chainring |
Teeth | 34T |
Speeds | 1x12-Speed |
Tooth Profile | Narrow-Wide (Dynamic Chain Engagement+) |
Mount | Direct Mount |
Crank Compatibility | FC-M8100 / M8120 / M8130 |
Material | Aluminum alloy |
Weight | 99 g (3.5 oz) |
Color | Black |
Country of Origin | Japan |
Condition | Brand new — original Shimano retail packaging |
Technology Highlights
✓Direct-mount 1x design — swap chainrings while the crank stays a common component.
✓Narrow-wide teeth — Shimano Dynamic Chain Engagement+ for superior chain retention.
✓12-speed optimized — tuned for Shimano Hyperglide+ 12-speed chains.
✓Genuine Deore XT — durable alloy construction, brand new in retail packaging.
What's in the Box
1 × Shimano Deore XT SM-CRM85 34T direct-mount chainring (with lockring as supplied)
Note: crank arm / crankset is not included
Brand new in retail packaging. Ships from Ontario, California (US domestic) · Estimated delivery 3–5 business days · Free 30-day returns.
