Shimano RT-6B750 200mm 6 bolt

The Shimano RT-6B750 is a six-bolt disc brake rotor built around a thicker 2.2 mm stainless steel braking surface. That extra material is the point. It raises heat capacity so braking stays consistent on long descents, resists bending when the rotor takes a hit from trail debris, and extends service life well beyond a conventional rotor.

The rotor mounts with the standard six-bolt ISO pattern, so it fits any hub drilled for six-bolt rotors. Shimano pairs it with its current four-piston mountain brake groups. In use the added thickness shows up as steadier modulation on long, rough descents, which cuts down the hand fatigue that comes from chasing a fading brake all the way to the bottom.

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