Shimano Deore XT SM-RT81-SS Disc Brake Rotor
Best high performance rotor for mountain bikers seeking superior heat dissipation.
This rotor is the gold standard for riders who demand consistent stopping power on long, technical descents. Its clever sandwich construction sheds heat faster than standard steel, preventing fade when things get steep. You trade a bit of complexity for a rock-solid, fade-free braking experience that stays quiet under pressure.
$39.00
More Deore XT options
Who it's for
- Mountain bikers tackling long, technical downhill trails
- Home mechanics looking for a fast and reliable setup process
- All-weather riders who prioritize safety and consistent lever feel
Who should skip it
- Cyclists with traditional 6-bolt wheelsets wanting a direct fit
- Budget-conscious commuters seeking basic replacement parts
- High-mileage riders who may neglect regular component wear inspections
Performance breakdown
Thermal Stability
Ice-Tech construction keeps braking consistent even on the longest, steepest descents.
Installation Speed
Center Lock system makes swapping rotors a quick, tool-efficient process.
Weight Efficiency
Aluminum core sheds unnecessary grams without compromising structural integrity.
Braking Modulation
Predictable, smooth feedback allows for precise speed control in technical sections.
Pad Compatibility
Versatile surface works seamlessly with both metal and resin brake pads.
Durability
Stainless steel braking track resists wear over thousands of hard miles.
Key Specs
Diameter
140 mm
Mounting Type
Center Lock
Material
Stainless steel and aluminum
Cooling Technology
Ice-Tech
Pad Compatibility
Resin and Metallic Pads
Rotor Shape
Round
Intended Use
Mountain Biking and Road Cycling
E-Bike Rated
No
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Ask Metto anything about the Shimano Deore XT SM-RT81-SS Disc Brake Rotor before you decide.
