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Topeak's CubiCubi series helps you mount a Topeak light (up to 1200 lumens), a spare battery, a GoPro, and your head unit. You can mount the dual box vertically or horizontally. © A. Yee / Cyclocross Magazine

Topeak’s CubiCubi series helps you mount a Topeak light (up to 1200 lumens), a spare battery, a GoPro and your head unit. You can mount the dual box vertically or horizontally. © A. Yee / Cyclocross Magazine