Requires Burris Adaptor Plate for Specific Engine

American Rail Frame Width, Includes Clamps

Fits 1 1/8 to 1 1/4″ (28mm to 32mm)

Angled Slider Mount Only

What is the difference between International and American Rail?
The distance center to center between the two engine rails.
International Measures 3 5/8″ and American Measures 3″.
Almost all race karts are International whether they are made in the US or not.

BMC540