The Surly Ultra New Fixed Rear Disc Hub is a high-durability hub designed for fixed-gear riders who want disc brake compatibility and bolt-on reliability. With a 135mm spacing and 10mm axle, it’s perfect for robust commuting, utility, or touring setups that require a tough, low-maintenance drivetrain. The fixed threading accepts a standard track cog and lockring, ensuring secure engagement with no coasting. Sealed cartridge bearings and a 6-bolt disc mount round out this purpose-built, Surly-strong hub.
The Surly Ultra New Fixed Rear Disc Hub is a high-durability hub designed for fixed-gear riders who want disc brake compatibility and bolt-on reliability. With a 135mm spacing and 10mm axle, it’s perfect for robust commuting, utility, or touring setups that require a tough, low-maintenance drivetrain. The fixed threading accepts a standard track cog and lockring, ensuring secure engagement with no coasting. Sealed cartridge bearings and a 6-bolt disc mount round out this purpose-built, Surly-strong hub.
Specs:
Axle Type: 10mm solid axle for bolt-on setup
Rear Spacing: 135mm
Drivetrain: Fixed-gear (threaded for fixed cog + lockring)
Hole Count: 32 holes
Brake Compatibility: 6-bolt disc
Bearings: Sealed cartridge bearings
Material: Aluminum hub shell with stainless steel axle and hardware
Color: Black
Chainline: ~52mm (adjustable depending on cog and spacers)
Intended Use: Track, urban, touring, or utility bikes with disc brakes
