



TRW MST321 — round brake disc for cross and off-road use. Made from robust steel, this 220 mm outer diameter disc meets the demands of off-road motorcycles: manufactured with strict tolerances and precise surface grinding for a uniform pad/disc interface. Its reinforced surface aims to provide long-term dimensional stability, useful when conditions are abrasive and demanding.
The machined finish and production controls ensure a consistent contact surface with the pads, limiting vibrations and promoting reliable braking performance — valuable assets on muddy or rocky terrains. A simple and reliable disc, it fits into the front or rear assemblies of compatible cross machines.
Compatibility examples: