The supports are clamped, not directly bolted, to the track, via the eight holes at the top of each support.

Mick Doohan's Motocoaster

Mick Doohan's Motocoaster

16 July, 2007 by Richard Wilson

The supports are clamped, not directly bolted, to the track, via the eight holes at the top of each support.

In this photo