Abstract: A bicycle hub 1 includes a hollow cylindrical body 3 which is provided with external splines having teeth 5 extending in axial direction. Each tooth has a first axial side 7 which is loaded during use by a sprocket wheel slid onto the body and an opposite, second axial side 9. Three of the teeth are composed of two portions, that is to say a first portion 11 which forms a whole with the body and a second portion which forms an insert 13. The insert partly forms the first side 7 of the tooth. The body is provided with three axial grooves 15 which accommodate the inserts 13. The inserts 13 partly protrude above the grooves and the height 17 of the inserts is approximately equal to the width 19 of the inserts.

Abstract: A bicycle hub 1 includes a hollow cylindrical body 3 which is provided with external splines having teeth 5 extending in axial direction. Each tooth has a first axial side 7 which is loaded during use by a sprocket wheel slid onto the body and an opposite, second axial side 9. Three of the teeth are composed of two portions, that is to say a first portion 11 which forms a whole with the body and a second portion which forms an insert 13. The insert partly forms the first side 7 of the tooth. The body is provided with three axial grooves 15 which accommodate the inserts 13. The inserts 13 partly protrude above the grooves and the height 17 of the inserts is approximately equal to the width 19 of the inserts.

Abstract: A sprocket mounting carrier has a cylindrical body which on the outside is provided with grooves extending in axial direction. The sprocket mounting carrier has such a shape that both sprockets of a first type and sprockets of a second type can be slid onto it. These sprockets each have a central hole whose bounding wall has cams. The bottoms and side walls of the grooves of the sprocket mounting carrier, in the event of sprockets being present on the sprocket mounting carrier, engage with the cams of the sprockets, so that the sprockets are secured to the sprocket mounting carrier both in radial direction and in tangential direction.

Abstract: A sprocket mounting carrier has a cylindrical body which on the outside is provided with grooves extending in axial direction. The sprocket mounting carrier has such a shape that both sprockets of a first type and sprockets of a second type can be slid onto it. These sprockets each have a central hole whose bounding wall has cams. The bottoms and side walls of the grooves of the sprocket mounting carrier, in the event of sprockets being present on the sprocket mounting carrier, engage with the cams of the sprockets, so that the sprockets are secured to the sprocket mounting carrier both in radial direction and in tangential direction.