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Happy 2022! Our *new* Winter hours are M 11a-4p, Tu-F 11-6, SAT 10-6. (CLOSED Sunday). Check out our new stock (including 2022 models!) of Breezer, Marin, Fuji and SE for commuters, gravel crunchers, BMX and recreational riders. To schedule bike repair, click thru to our online appointment system below. We will accept walk-up repairs until March 1. We ask that clients be masked and vaccinated as a requisite to enter our store. Questions? E-mail us at or text/call us at 510-328-1158.

HALO Fixed Cog and Lockring

HALO Fixed Cog and Lockring
  • Color | Size: Silver | 14T
  • Color | Size: Silver | 15T
  • Color | Size: Silver | 16T
  • Color | Size: Silver | 17T
  • Color | Size: Silver | 18T
Please select options


- CNC machined steel track cog, 1.37"x24tpi (right handed) thread, 1/2" x 1/8" teeth
- Choose aluminum or steel lockrings, 1.29" x 24tpi left hand thread

Part Numbers

Option UPC MPN
Silver / 15T 05051699018635 FCHA815
Silver / 16T 05051699018680 FCHA816