Shimano Deore SM-CRM66 chainring with 32 teeth, Direct Mount for 12-speed drivetrains. Steel construction for high durability and precise shifting performance.
Shimano Deore SM-CRM66 – 32-Tooth Chainring for 12-Speed Drivetrains
The Shimano Deore SM-CRM66 chainring is a high-quality replacement part for Shimano Deore cranksets of the M6200/MT620 series. It is specifically designed for 12-speed drivetrains and attaches directly to the crankarm via the Direct Mount system.
32 teeth provide a versatile gear ratio for demanding MTB trails and everyday riding.
Direct Mount design enables tool-free installation without chainring bolts and reduces weight.
Steel construction ensures high wear resistance and long-lasting performance even under harsh conditions.
Compatible with Shimano Deore M6200 and MT620 cranks for a smooth drivetrain.
24-month manufacturer warranty provides long-term investment security and peace of mind.
What sets the Deore SM-CRM66 apart
Compared to aluminum chainrings, the steel version offers significantly higher durability – ideal for riders who cover many miles or frequently ride on muddy terrain. The precise tooth geometry ensures clean chain guidance and reduces the risk of chain drops. The 32-tooth format has established itself as an optimal compromise between traction and speed.
Ideal for...
This chainring is aimed at mountain bikers with Shimano Deore 12-speed drivetrains looking for a reliable, low-maintenance replacement part. It suits cross-country, trail, and enduro riding equally well. It is also suitable for e-MTBs with Deore drivetrain components, provided the crank is Direct Mount compatible.
How to install the chainring
Loosen the crank bolt and pull the crank arm off the bottom bracket spindle. Remove the old chainring by releasing the Direct Mount lock. Seat the new SM-CRM66 chainring, aligning the directional arrow. Press the crank arm back onto the spindle and tighten the crank bolt to the specified torque. Check the derailleur adjustment after installation.
Shimano is a Japanese bicycle component manufacturer, globally renowned for high-quality drivetrain and braking groupsets. The Deore series is a reliable lineup for mid-range MTB applications.
It is a Direct Mount chainring for Shimano Deore M6200/MT620 cranksets, designed for 12-speed drivetrains with 32 teeth made of steel.
It fits exclusively on Shimano Deore cranks of the M6200 and MT620 series that feature a Direct Mount interface.
The chainring has 32 teeth, a Direct Mount interface, is made of steel, and weighs 218 grams. It is optimized for 1x cranks with a 12-speed chain.
Only the chainring is included. No bolts are required as the Direct Mount system eliminates the need for separate chainring bolts.
Clean the chainring regularly with a soft brush and degrease if necessary. Inspect the teeth for wear and replace the chainring if significant abrasion is observed.
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