BuildMyMTB
Prototype - Evolving Daily

Box Rear Cog

15 models, 15 verified variants. Only rows checked against Box’s own page are listed.

A value shown as a set or a range differs between this model’s variants and is never one variant’s spec. A cell marked not stated is a field the maker does not publish, so nothing here checks it.

ModelVariantsTeethFits driverPitchPrice (MSRP)
Box One Single Speed Aluminum Cog (13T)113 teethFits a cassette driver1/8"$29.99
Box One Single Speed Aluminum Cog (14T)114 teethFits a cassette driver1/8"$29.99
Box One Single Speed Aluminum Cog (15T)115 teethFits a cassette driver1/8"$29.99
Box One Single Speed Aluminum Cog (16T)116 teethFits a cassette driver1/8"$29.99
Box One Single Speed Aluminum Cog (17T)117 teethFits a cassette driver1/8"$29.99
Box One Single Speed Aluminum Cog (18T)118 teethFits a cassette driver1/8"$29.99
Box One Single Speed Chromoly Cog (13T)113 teethFits a cassette driver1/8"$34.99
Box One Single Speed Chromoly Cog (14T)114 teethFits a cassette driver1/8"$34.99
Box One Single Speed Chromoly Cog (15T)115 teethFits a cassette driver1/8"$34.99
Box One Single Speed Chromoly Cog (16T)116 teethFits a cassette driver1/8"$34.99
Box One Single Speed Chromoly Cog (17T)117 teethFits a cassette driver1/8"$34.99
Box One Single Speed Chromoly Cog (18T)118 teethFits a cassette driver1/8"$34.99
Box Two Freewheel (16T)116 teethFits a freewheel driver1/8"$89.99
Box Two Freewheel (17T)117 teethFits a freewheel driver1/8"$89.99
Box Two Freewheel (18T)118 teethFits a freewheel driver1/8"$89.99

Source for every row: Box’s own product pages, last checked between 2026-08-01 and 2026-08-19.

The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.

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