I need to 'cut' the 'ahead' tube on the forks I have for the Marin. The bike came with a pair of RST forks & a multi-adjustable Zoom 'head', holding Marin bars.
The Zoom head was supported by 2 x 5mm alloy spacers. The fittings are standard Acor kit.
The 'stem' (steerer ?) on the...