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Greetings! Proudly celebrating 9 years of cycling magic in the Laurel District. Enjoy new LOWER prices on Marin, SE, Fuji and Breezer in stock. Our Sept. 2023 hours are: M-F 11-6, SAT 10-6. Closed Sunday. We are open Tuesday Sept. 26 in defiance of ridiculous calls for a "merchant strike." A strike is when workers withhold their labor so the boss loses profits. When merchants withhold services, clients simply find someone else to provide the service. Community safety means safety for *all* of us, including the most vulnerable, not just the privileged business class with access to media outlets. Questions? E-mail us at or text/call us at 510-328-1158.

Black Ops Micro Drive Dual Core UL

Black Ops Micro Drive Dual Core UL
  • Color | Size | Speeds: Black | 25T | Single
  • Color | Size | Speeds: Green/Gray | 25T | Single
  • Color | Size | Speeds: Purple/Black | 25T | Single
  • Color | Size | Speeds: White/Gray | 25T | Single
Please select options


- Fits 3-piece 22mm BMX cranks
- 2mm 6061 aluminum core
- Includes adapter for 19mm spindles
- Teeth: 25T
- Chain Compatibility: Singlespeed
- Tooth Type: Standard

Part Numbers

Option UPC MPN
Black / 25T / Single 072774222438 22243