.three. 1 1/8" Threadless Headset
Box Three Threadless Headsets features a hybrid aluminum and steel construction. The top cap, upper bearing cover and lower race are CNC-machined from aluminum alloy while the cups are made from steel. This construction results in a high-quality headset at a lower cost. Each headset is fitted with smooth rolling, cartridge bearings and are designed for frames that accommodate external cup style headsets and forks that have straight, 1 1/8 inch steerer tubes.
|Material||6061-T6 Aluminum (cap), Steel (cups)|
|SHIS||EC 34/28.6 | EC 34/30|
|Weight||163 grams / 5.7 ounces|