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This fork stem option is suitable for your Samsung Galaxy S3 on your superbike / sports touring motorcycle. This motorcycle mounting kit is ideal for if you want to keep your Smartphone in its own protective case. Please note rain cover also included. Universal One Holder (Included)Ultimateaddons One holder which you can mount in the car, transfer to your motorcycle when you go out a run at the weekends? This one holder by Ultimateaddons will support Smartphones with dimensions of Width 50-80mm, Height 120-170mm and Depth 5-15mm.
25mm to 3 Prong Adapter - (Included) Ultimateaddons connection plate is the 3 prong socket plate is designed to allow Ultimateaddons® 3 Prong holders and cases to be connected.
Fork Stem Attachment - (Included)Simply measure the internal diameter of the fork stem, you may have a cap covering this click the link above for detailed information. Extender - (Optional)if you want more flexibility with the positioning of your Smartphone or if you want to add extra height ideal if you use a tank bag is select the 3" extender.