Shimano RT-MT800 Disc Rotor - External Spline Type
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Shimano RT-MT800 Disc Rotor - External Spline Type
Shimano RT-MT800 Disc Rotor - External Spline Type Info
The Shimano RT-MT800 Disc Rotor - External Spline Type is a heat-managing rotor built around Shimano's IceTech Freeza construction — a three-layer aluminium-clad steel design engineered to pull heat away from the braking surface and reduce fade on long descents or repeated hard stops. Originally developed for XTR-level builds, it carries that same thermal performance and braking consistency across a wide range of compatible Shimano groupsets, from mountain to road.
The external spline interface is straightforward to install and pairs with Shimano's Centre Lock hubs. Four size options — 140mm through 203mm — mean it suits everything from cross-country race builds running minimal rotor diameters to trail and enduro bikes where additional stopping leverage makes a real difference on steep terrain.
Shimano RT-MT800 Disc Rotor - Specs at a Glance
- Mount type: Centre Lock (External Spline)
- Available sizes: 140mm, 160mm, 180mm, 203mm
- Construction: IceTech Freeza — aluminium-clad three-layer steel
- Finish: Black
- Compatibility: XTR, XT, and compatible 12-speed Shimano road groups
