BOX One Folding Tire Size:20 x 1.75" 57mm – 331g / 291g

57mm – 331g / 291g

these chainrings offer a high tooth profile for superior chain engagement and power transfer

Material: Forged aluminum arms

Crank arms found on some fitness equipment use nonstandard extractor threads and are not compatible with Park Tool crank pullers

Optimized Cutouts to Dissipate Heat

BOX One Folding Tire Size:20 x 1.75" 57mm – 331g / 291gBox One 120 TPI Folding Tires were engineered with a minimalist approach to hit lofty goals for weight, traction, rolling resistance, and rebound. At its heart is a super supple 120TPI casing where we forced in as much rubber displacing nylon as possible. Skin walls are employed to reduce drag and further reduce weight. We flanked the high density casing with a tightly packed hoop of aramid fibers. Finally, we draped this all with BMX race specific