The Front train hold of 5 mm is the precision setting tool par excellence for the chassis of the group OTK. It settles on the rocket of 25 mm (Senior standard) between the hub and the eccentric rings.

It is this small ring that will allow you to change the width of your front lane with finesse. In karting, every millimeter counts: switch from a 10 mm hold to a 5 mm hold can release the front train and allow the kart to "rotate" more easily in tight pins.