Bates XL Fork Adapters for Big Twin 1936-1986

Sometimes it's the little things that make big things possible.

This adapter allows the installation of Sportster forks in Big Twin frames up to 1986. Since the steering head on Sportster models is longer than on Big Twin frames, the fork stem protrudes further through the upper triple tree. A special adapter is therefore needed to compensate for this excess length. It is placed on top of the upper triple tree above the overlength fork stem. The adapter and the steering head adjusting bolt allow the adjustment of the steering head bearing clearance.