



TRW MST331 — Brake Disc
Designed for demanding riders, this TRW brake disc (manufacturer's ref. MST331) is intended for trails, roadsters, sports bikes, touring bikes, and enduro machines. It features a round treated steel disc that combines a machined braking surface and an internal hub made of titanium grey anodised aluminium for a neat appearance and structural integrity suited to road and occasional track use.
The disc benefits from laser cutting machining and heat treatment to limit deformation and wear under heavy loads. Its design aims for a more uniform heat distribution and consistent contact with the pads — compatible with organic, sintered, or carbon-based pads. Sold individually: please order two discs for a dual disc installation.