BM WORKS Speed Extender - Lightweight (80g) Bicycle Handlebar Extender for Bike Mounts, GPS Units, Lights, Smartphone Cases, Mounts and Holders. With Adjustable Bar Length up to 18cm! BM WORKS Speed Extender - Lightweight (80g) Bicycle Handlebar Extender for Bike Mounts, GPS Units, Lights, Smartphone Cases, Mounts and Holders. With Adjustable Bar Length up to 18cm!