This Box Pinion cog fits the Box One driver, Harmonic driver, or any Shimano compatible driver and is manufactured of CNC machined 7000 series aluminum. Chain Fit: 3/32″ recommended (1/8″ can be used as well).
Weights:Â
- 13t: 8 grams / 0.3 ounces
- 14t: 11 grams / 0.4 ounces
- 15t: 13 grams / 0.5 ounces
- 16t: 14 grams / 0.8 ounces
- 17t: 16 grams / 0.6 ounces
- 18t: 18 grams / 0.65 ounces










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