Abstract: A bicycle handlebar assembly comprises a base bar, a v-shaped stem selectively removable from the base bar, and a bicycle fork assembly. Control cables from the bicycle may be routed from the base bar into hollow diverging stem members of the v-shaped stem. The bicycle fork assembly comprises an external-steerer fork having a load-bearing member and a preload tensioning rod. The preload tensioning rod fits within a head tube of the bicycle, and a hollow space around the preload tensioning rod accommodates control cables passing from the v-shaped stem into a hollow portion of the bicycle frame. The v-shaped stem is secured against the base bar by a pair of nut plates. In some examples, an engagement portion of an accessory such as an aerobar extension assembly is configured to secure the v-shaped stem and an aerobar extension against the base bar.

Abstract: A bicycle handlebar assembly comprises a base bar, a v-shaped stem selectively removable from the base bar, and a bicycle fork assembly. Control cables from the bicycle may be routed from the base bar into hollow diverging stem members of the v-shaped stem. The bicycle fork assembly comprises an external-steerer fork having a load-bearing member and a preload tensioning rod. The preload tensioning rod fits within a head tube of the bicycle, and a hollow space around the preload tensioning rod accommodates control cables passing from the v-shaped stem into a hollow portion of the bicycle frame. The v-shaped stem is secured against the base bar by a pair of nut plates. In some examples, an engagement portion of an accessory such as an aerobar extension assembly is configured to secure the v-shaped stem and an aerobar extension against the base bar.

Abstract: A bicycle handlebar assembly comprises a base bar, a v-shaped stem selectively removable from the base bar, and a bicycle fork assembly. Control cables from the bicycle may be routed from the base bar into hollow diverging stem members of the v-shaped stem. The bicycle fork assembly comprises an external-steerer fork having a load-bearing member and a preload tensioning rod. The preload tensioning rod fits within a head tube of the bicycle, and a hollow space around the preload tensioning rod accommodates control cables passing from the v-shaped stem into a hollow portion of the bicycle frame. The v-shaped stem is secured against the base bar by a pair of nut plates. In some examples, an engagement portion of an accessory such as an aerobar extension assembly is configured to secure the v-shaped stem and an aerobar extension against the base bar.

Abstract: A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

Abstract: An adjustable riser assembly for mounting a handle bar assembly on a bicycle comprising a riser post; a tilt adjustment plate; the riser post including a curved mounting surface for receiving the tilt adjustment plate and the curved mounting surface being configured to support the tilt adjustment plate in a range of adjustable angular positions; and a bolt fastener for securing the tilt adjustment to the riser post in an angular position or a horizontal position.

Abstract: A bicycle handlebar assembly comprises a base bar, a v-shaped stem selectively removable from the base bar, and a bicycle fork assembly. Control cables from the bicycle may be routed from the base bar into hollow diverging stem members of the v-shaped stem. The bicycle fork assembly comprises an external-steerer fork having a load-bearing member and a preload tensioning rod. The preload tensioning rod fits within a head tube of the bicycle, and a hollow space around the preload tensioning rod accommodates control cables passing from the v-shaped stem into a hollow portion of the bicycle frame. The v-shaped stem is secured against the base bar by a pair of nut plates. In some examples, an engagement portion of an accessory such as an aerobar extension assembly is configured to secure the v-shaped stem and an aerobar extension against the base bar.

Abstract: An adjustable riser assembly for mounting a handle bar assembly on a bicycle comprising a riser post; a tilt adjustment plate; the riser post including a curved mounting surface for receiving the tilt adjustment plate and the curved mounting surface being configured to support the tilt adjustment plate in a range of adjustable angular positions; and a bolt fastener for securing the tilt adjustment to the riser post in an angular position or a horizontal position.

Abstract: An adjustable riser assembly for mounting a handle bar assembly on a bicycle comprising a riser post; a tilt adjustment plate; the riser post including a curved mounting surface for receiving the tilt adjustment plate and the curved mounting surface being configured to support the tilt adjustment plate in a range of adjustable angular positions; and a bolt fastener for securing the tilt adjustment to the riser post in an angular position or a horizontal position.

Abstract: A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

Abstract: A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

Abstract: An adjustable riser assembly for mounting a handle bar assembly on a bicycle comprising a riser post; a tilt adjustment plate; the riser post including a curved mounting surface for receiving the tilt adjustment plate and the curved mounting surface being configured to support the tilt adjustment plate in a range of adjustable angular positions; and a bolt fastener for securing the tilt adjustment to the riser post in an angular position or a horizontal position.

Abstract: A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

Abstract: A bicycle handlebar assembly comprises a base bar, a v-shaped stem selectively removable from the base bar, and a bicycle fork assembly. Control cables from the bicycle may be routed from the base bar into hollow diverging stem members of the v-shaped stem. The bicycle fork assembly comprises an external-steerer fork having a load-bearing member and a preload tensioning rod. The preload tensioning rod fits within a head tube of the bicycle, and a hollow space around the preload tensioning rod accommodates control cables passing from the v-shaped stem into a hollow portion of the bicycle frame. The v-shaped stem is secured against the base bar by a pair of nut plates. In some examples, an engagement portion of an accessory such as an aerobar extension assembly is configured to secure the v-shaped stem and an aerobar extension against the base bar.