This is a replacement brake disc that is bolt on ready, no waiting on machining time!
- 1.5lb lighter than 2020 disc
1.3lb lighter than stock 12-19 disc
Reduces rotating weight, improving throttle response.
Dissipates heat faster, improving brake performance.
The 2021 disc is a different part number but is dimensionally the same as the 2012-2020 disc so this disc will fit 2012-2021+ M / Ascender models.
M / Alpha One, Hardcore Series brake disc only, if yours looks different than pictured, this will NOT work.