Box One Brake Arms are cold forged and CNC-machined from 6061-T6 aluminum. Cold forging produces the strongest, stiffest, lightest weight and most durable bicycle parts. Featuring 35 millimeters of vertical brake pad adjustmentmore than most linear-pull brakes.

• Box One Brake Arms are cold forged and CNC-machined from 6061-T6 aluminum. Cold forging produces the strongest, stiffest, lightest weight and most durable bicycle parts. Featuring 35 millimeters of vertical brake pad adjustmentmore than most linear-pull brakes.
• Precision sealed bearing pivots
• Titanium and stainless steel hardware