Shimano Ultegra SM-RT800 Disc Rotor
Best high performance upgrade for serious road cyclists seeking reliable braking.
Engineered for high-performance road cycling, this rotor utilizes advanced cooling technology to maintain consistent braking power during long descents. Its two-piece construction balances weight savings with structural rigidity, ensuring reliable stopping performance in all weather conditions.
$47.97
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Who it's for
- Road cyclists tackling mountainous terrain and long alpine descents
- Performance-oriented riders seeking marginal gains in speed and efficiency
- Cyclists who value a quiet, distraction-free riding experience
Who should skip it
- Lightweight riders frequently cycling in gusty or exposed coastal conditions
- Budget-conscious commuters looking for basic, low-cost replacement parts
- Riders with older 6-bolt hub configurations seeking a direct fit
Performance breakdown
Heat Dissipation
Freeza technology keeps temperatures remarkably low during aggressive, sustained descents.
Structural Rigidity
The aluminum spider design eliminates flex for precise, confident braking feedback.
Installation Ease
Center-lock mounting makes rotor swaps quick, clean, and incredibly straightforward.
Weight Efficiency
Lightweight construction minimizes rotational mass without sacrificing essential stopping power.
Pad Compatibility
Versatile surface works seamlessly with resin or metallic brake pads.
Brake Fade Resistance
Three-layer construction maintains consistent stopping power under heavy, prolonged braking.
Key Specs
Hub/Disc Compatibility
Center-Lock Disc
Pad Compatibility
All Pad Compounds
Rotor Size
140 mm
Rotor Type
Two Piece
Weight
108 grams
Cooling Technology
Freeza
Material
Aluminum and Stainless Steel
Included Hardware
Rotor lockring
Know before you buy
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