air-cooled drum brakes ++90mm

Air-cooled drum brakes with maximized cooling for fast vehicles and mountainous topography.
The basis for these hubs is the Sturmey Archer drum brake hub XL-SD.
We have designed completely new heatsinks that make optimal use of the space between the flanges.

By mounted heatsinks hub can dissipate a lot of heat energy.
So the brakes are less thermally stressed and the spoke tension can not fall so much.
This extends the life of the wheel increases. The air-cooled + hub is available in various configurations.
Make sure when choosing your vehicle. For the assembly of carbon caps only specimens with machined outer flange ( "Flat" and "Highend" ) can be used.
Technical details:

Hole numbers: 28, 32 und 36
Increasing the cooling surface: 750 cm²
Color: silver, black anodized
Heatsink: black anodized aluminum, 5 pcs
scope of supply: 1 Hub