FC-M660 INNER & OUTER CHAINRINGS

Product Information

The Shimano SLX FC-M660 chainrings offer robust and precise performance for your mountain bike drivetrain, whether you're tackling all-mountain trails, cross-country routes, or simply commuting. These genuine Shimano replacement parts are designed for the FC-M660 crankset, catering to both 3x9-speed and 3x10-speed setups. They come in a variety of tooth counts and material compositions to optimize your gearing.

Features

• Optimized for SLX FC-M660 3x9-speed and 3x10-speed cranksets, with some inner chainrings also compatible with 2x9-speed and 2x10-speed systems.
• Available in different material constructions: durable steel for smaller tooth counts, a steel-fiberglass composite for the 32T middle ring, and lightweight aluminum for larger outer rings.
• Four-arm design with dual Bolt Circle Diameters (BCD) for versatility.
• Designed to ensure optimal shifting performance, especially when paired with other AE-type chainrings.

Specs

• Compatibility: Shimano SLX FC-M660 cranksets, specific versions for 9-speed and 10-speed drivetrains.
• Bolt Circle Diameter (BCD): 104 mm (outer/middle) and 64 mm (inner).
• Arm Design: 4-arm.
• Material: Steel (e.g., 22T, 26T), Steel Fiberglass Composite (32T), Aluminum (36T, 44T, 48T).
• Example Tooth Counts: 22T, 24T, 26T, 32T, 36T, 44T, 48T.
• The UPC 689228250000 specifically identifies a Shimano SLX FC-M660 9-speed 22T inner chainring.