Shimano RT-MT800 Disc Rotor - 180mm - Deore XT

Shimano RT-MT800 Ice Tech FREEZA Disc Rotor External Lockring 180mm - Silver A. Ice Tech rotors ac...

Best current price£26.95from Merlin Cycles

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Merlin CyclesShimano Silver Xt Mt800 Ice-Tec Centrelock Rotor - / 180Mm / Centerlock
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eBayShimano XT Disc Brake Rotor 180mm RT-MT800 Ice Tech CL LOCKRING NOT INCLUDED MTB
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Condor CyclesShimano Ultegra, Grx & Deore Xt Rt-Mt800 Centrelock Rotor
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AmazonBrake Disk RT-MT800 Ice Tech Freeza 140mm - CENTER
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365Rider ESShimano RT-MT800 Center Lock 140mm Brake Disc with Internal Gearing
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eBayShimano RT-MT800 140mm Centre Lock Ice Tech Freeza Disc Brake Rotor - Silver A
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Product Information

Full details

The Shimano RT-MT800 Ice Tech FREEZA Disc Rotor is designed for cyclists seeking enhanced braking performance and heat management, particularly in demanding conditions. Its key benefit is significantly reduced brake fade and increased pad life due to advanced heat dissipation technology. A potential caveat is that its Center Lock system requires a specific hub interface, limiting compatibility with some older or different hub standards.

All features

SeriesDeore XT
Model Part NumberIRTMT800ME
BrandSHIMANO

Extended Product Information

FAQs

What is ICE TECHNOLOGIES FREEZA?

ICE TECHNOLOGIES FREEZA is Shimano's advanced heat management system for disc brake rotors. It incorporates a special construction that dramatically enhances heat dissipation, reducing brake fade and extending the life of brake pads.

What size rotor do I need?

Rotor size depends on your bike's intended use, frame/fork clearance, and brake caliper type. 180mm offers a good balance of power and heat management for many applications, but consult your bike manufacturer's recommendations or a professional mechanic if unsure.

Can I use this rotor with a 6-bolt hub?

No, the RT-MT800 uses Shimano's CENTER LOCK mounting system. It is not compatible with standard 6-bolt disc brake hubs. You will need a hub that specifically supports the Center Lock interface.

How do I clean the rotor?

Use isopropyl alcohol or a dedicated disc brake cleaner and a clean, lint-free cloth. Avoid using degreasers or lubricants on the braking surface, as they can severely impair braking performance.

What is the average weight of the 180mm rotor?

The average weight for the 180mm Shimano RT-MT800 rotor is approximately 132g.

Does this rotor come with a lockring?

Yes, the Shimano RT-MT800 disc rotor comes complete with a Center Lock external lockring for installation.

Troubleshooting

Brake noise (squealing or grinding)

Ensure the rotor is clean and free of contaminants. Check that brake pads are properly seated and not glazed. Verify that the rotor is true (not warped) and properly torqued. Bed in the brake pads and rotor according to manufacturer instructions.

Reduced braking power

Check for rotor contamination, excessive wear, or warping. Ensure brake fluid levels are adequate and the system is properly bled. Inspect brake pads for wear or contamination. Verify the rotor is compatible and correctly installed.

Rotor appears warped or bent

Carefully inspect the rotor for visible signs of bending. Minor bends may sometimes be corrected with specialized tools, but significant warping often requires rotor replacement. Ensure the rotor was not damaged during installation or impacted.

Pros and Cons

Pros

  • Significantly improved heat dissipation to prevent brake fade.
  • Extended brake pad life due to better temperature management.
  • Easy and secure installation/removal with the Center Lock system.
  • Robust construction that balances rigidity and weight.
  • Consistent and reliable braking performance.

Cons

  • Requires a compatible Center Lock hub, limiting compatibility with 6-bolt systems.
  • May be overkill for casual riding where extreme heat is not a factor.
  • The 180mm size might require specific frame/fork mounts.

Setup, Compatibility & Care

Setup: The RT-MT800 features Shimano's CENTER LOCK mounting system. Installation requires a compatible hub with a splined Center Lock interface and a Center Lock lockring tool. Ensure the rotor is seated correctly on the splines before tightening the lockring to the manufacturer's specified torque. Always follow the specific installation instructions provided by Shimano or your bicycle manufacturer.

Compatibility: This rotor is designed for bicycles equipped with disc brake systems and compatible CENTER LOCK hubs. The 180mm diameter is a common size, but always confirm your frame and fork have clearance and the correct mounting type for this rotor size.

Care: Keep the rotor surface clean and free of grease or oil. Use isopropyl alcohol or a dedicated disc brake cleaner to clean the rotor. Avoid touching the braking surface with bare hands, as oils can contaminate it and affect performance. Inspect the rotor regularly for any signs of damage or excessive wear.

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