Shimano SLX SM-RT66 6 Bolt Disc Rotor 180mm

The Shimano SM-RT66 disc brake rotor offers excellent performance with its 6-bolt international st...

Best current price£10.99from Merlin Cycles

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Merlin CyclesShimano Silver Sm-Rt66 6-Bolt Rotor - / 180Mm / 6 Bolt
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eBayShimano SM-RT66 6 Bolt 160mm Brake Rotor
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Tweeks CyclesShimano 6-Bolt Rotors SM-RT66 SLX Zee - 160mm
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TredzShimano Silver Sm-Rt66 Zee/Slx Rotor
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Condor CyclesShimano Rt66 6-Bolt Disc Brake Rotor
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eBayShimano Deore SM-RT66 6 Bolt Rotor 220mm Bike Disc Brake Rotor - Steel Black A
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Product Information

Full details

The Shimano SLX SM-RT66 6-Bolt Disc Rotor is designed for mountain bikers seeking reliable braking performance. Its precision-cut stainless steel surface offers enhanced pad clearing in muddy conditions and improved cooling, leading to better stopping power and longer pad life, especially with Shimano Zee and SLX systems. A potential consideration is its specific compatibility with 6-bolt, non-center-lock hubs.

All features

SeriesSLX
Model Part NumberISMRT66M
BrandSHIMANO

Extended Product Information

FAQs

What is the difference between 6-bolt and Center-Lock rotors?

6-bolt rotors attach to the hub with six individual bolts, while Center-Lock rotors use a splined interface and a lockring, similar to a cassette. The SM-RT66 is a 6-bolt rotor.

Can I use the SM-RT66 with Center-Lock hubs?

No, the SM-RT66 is specifically designed for 6-bolt hubs and is not compatible with Center-Lock systems.

What brake pads are compatible with this rotor?

The SM-RT66 rotor is compatible with both resin (organic) and metal (sintered) brake pads, though it is particularly well-suited for metal pads due to its robust construction and cooling design.

How do I clean the rotor?

Use isopropyl alcohol and a clean, lint-free cloth to wipe down the braking surface. Avoid getting any lubricants or chain oil on the rotor.

What is the recommended torque for the rotor bolts?

Refer to Shimano's official documentation for the exact torque specification, but it is typically around 4-6 Nm. Always use a torque wrench.

Does this rotor come with bolts?

Typically, rotor bolts are sold separately. Please check the product packaging or description for confirmation.

What is the purpose of the holes and cuts on the rotor surface?

The precision-cut and drilled surface helps to clear mud and debris, improving pad contact in adverse conditions, and also aids in dissipating heat generated during braking.

Troubleshooting

Rotor is rubbing against brake pads

Ensure the rotor is not bent. Check that the wheel is properly seated and secured in the dropouts. If the rotor is slightly bent, it may be possible to carefully true it using a rotor truing tool.

Brakes are noisy (squealing)

Ensure the rotor and brake pads are clean. Contamination from oil or grease can cause noise. Bed in the brakes again, or consider replacing the brake pads if they are glazed or worn.

Reduced braking power

Check the condition of the brake pads and rotor surface for wear or contamination. Ensure brake fluid levels are correct and the system is properly bled. Re-bed the brakes to ensure optimal performance.

Pros and Cons

Pros

  • Excellent braking performance, especially in wet or muddy conditions.
  • Durable stainless steel construction for longevity.
  • Improved cooling reduces brake fade on long descents.
  • Compatible with metal brake pads for maximum stopping power.
  • Easy installation with the 6-bolt system.

Cons

  • Only compatible with 6-bolt, non-center-lock hubs.
  • Not compatible with center-lock systems.
  • Can be slightly heavier than some alternative rotor designs.

Setup, Compatibility & Care

Setup: The SM-RT66 rotor utilizes a standard 6-bolt mounting system. Ensure your wheel hub is also equipped with a 6-bolt rotor mount. Use the appropriate torque wrench and Shimano-recommended torque settings when installing the rotor bolts to prevent damage and ensure security.

Compatibility: This rotor is designed for use with Shimano Zee and SLX disc brake systems. It is compatible with non-center-lock hubs only. Ensure your brake calipers are compatible with a 180mm rotor size.

Care: Keep the braking surfaces clean. Avoid touching the braking surface with oily hands, as this can contaminate the pads and rotor, reducing performance. Clean the rotor with isopropyl alcohol and a clean cloth if it becomes contaminated. Periodically check rotor bolt tightness.

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