SRAM X0 Front Hub Conversion Caps - 15 x 100 / 110 mm Boost - 31 mm Through Axle

15 x 100 / 15 x 110 mm Boost Compatible Front Hub Conversion Caps for use with 31mm Through Axles (Torque Cap RockShox Forks) on the following SRAM Hubs;
- X0
- 900
- Rise 60 B1
- Roam 30
- Roam 40
- Roam 50 B1
- Roam 60 B1
- Rail 40
- Rise XX

As found on page 58 of SRAM's 2018 Spare Parts Catalogue