Box One 120 TPI 20" Folding Race Tyre 4131 Seamless Sanko Japanese Tubing The dropouts are 5mm thick

The dropouts are 5mm thick 4130 chromoly and laser cut to give them strength and a real clean look

its nylon construction reduces friction and doesn't snag when it comes into contact with surfaces you're grinding

There's also an Air Plush liner inside for maximum confort

RISE: 35mm (3mm inverted)

4" - 731g (25

Box One 120 TPI 20" Folding Race Tyre 4131 Seamless Sanko Japanese Tubing The dropouts are 5mm thickThe Box One 120 TPI Folding Tyre was built with low weight, traction, rolling resistance and rebound in mind to ensure a true performance tyre was created. At its heart is a super supple 120TPI casing where Box forced in as much rubber displacing nylon as possible. Skin walls are employed to reduce drag and further reduce weight. They flanked the high density casing with a tightly packed hoop of aramid fibers. Finally, they draped this all with BMX