The tunnel depth measures 3

so you can bolt these right in place

This duplex (dual row) chain is for Triumph motorcycles with a duplex primary such as unit construction (1963 and up) 650 c

The mounting tabs are undrilled

FNA Far-E Headlight - Clear Lens Inside Diameter_1.0" The tunnel depth measures 3FNA's latest addition to our light products is this rectangular light made from a vintage Ferrari GT250 fog lens. It has 4000 lumens of output with a high low two wire hookup. Lenses are cast in house and the housings are machined locally. The light can be mounted vertically or horizontal by simply taking the mounts bolt loose and rotating the block 90 degrees. This light will hold up way better than the original stamped metal vintage lights that fall