Sturmey Archer Air Cooled Drum Brake Hub - High End, 90mm

These drum brakes are air-cooled and are good for fast speeds and mountainous topography. This hub is based on the Sturmey Archer drum brake X-SD.

The hub can disperse a lot of heat due to the mounted heat sink. This increases the life of the wheel.

The air-cooled + hub is available in various configurations. Make sure when selecting the specifications of your vehicle. For the assembly of carbon caps, only specimens with a machined outer flange apply.

Technical details:

Number of holes: 28
Increasing of the cooling surface: 400 cm2
Color: black anodized
Heatsink: black anodized aluminum, ten-piece lathed outer flanges for the use of Carbon Hat | be worked cooling grooves on the circumference of the drum body between bearing spacer aluminum