Pretty simple concept… slide the cog on to the splines and tighten it down… at the moment I’m running the 48H traditional Halo track hubs and I’m pretty blown away with them… although they need to do solid axle and a perhaps a 14mm conversion kit for the freestyle market.

Halo Fixed-G Hub
Groundbreaking innovation for fixed gear riders! A splined hub body (with cogs that slide on) and an independent lockring… that never has to handle rotational forces from the drive. Micro-gearing down to 12t and an adjustable chainline!

Halo Fix-G advantages:
• Easy and secure fixing & servicing.
• Adjustable chainline.
• Twin cog option (can run 2 cogs together.)
• Accepts from 12T + cogs (for compact gearing).
• No need for chainwhip tools.

Tech features:
Hi-polish custom CNC machined hub shell,
HG type fixed spline.
Japanese sealed bearings.
Hollow M10 Cr-Mo axle.
120mm spacing.
22mm “Large cone-faces” to avoid damage to frame.
includes cog spacers and alloy lockring.

More Halo lovelyness spotted at Tokyo Fixed Gear, not sure how tough these cogs are but still…

This looks a lot better than the Urban complete. Aero Warrior rims and what look like fatter Halo tires.

Identiti Bikes

These are pretty cool might get myself one, and they are nicely priced to!

More info here on Road.cc