There was plenty enough space available for what i had to move further in. What really bugged me was my arms outward angle when holding on to the bar ends (these can not be slid inwards as one end is shut) and any movement not deliberate all the way out at the end will result in too much movement of the wheel making my ride less steady. I am used to the narrow cyclocross handlebar so quite the leap getting used to 63 cm.