Amazon.com: BRCOVAN Aluminum Alloy Motorcycle Fork Stem Mount Base with Amazon.com: BRCOVAN Anti Theft Motorcycle Fork Stem Phone Mount Holder Quad Lock Motorcycle Fork Stem Mount Pro FREE UK DELIVERY 31% off on 128GB S20 S20 Plus Galaxy Dual Sim Smartphone OneDayOnly. 17. 5 20. 5mm Motorbike Stem Phone Mount & Case for Samsung Galaxy S20 Plus Sports motorcycle yoke mount with weather resistant protective case. Central fork stem hole fitting for holes 17. 5mm 20. 5mm 0. 68" 0. 81" This central fork stem yoke mount has been developed for use on motorcycles where a handlebar mounting option is not possible or desirable. Designed to fit sports, superbike, endurance and touring motorbikes using the cylindrical bore wall (steering head tube) of the fork stems. Case Features: Case offers protection from water splashes light rain showers, dust & dirt. Light weight yet strong. Covered zip Sensitive front lens ensures your phone can be accessed easily. Power cable access Mount Features: Motorcycle Fork Stem Yoke Mount Fits Stems: 17. 5mm 20. 5mm 0. 68" 0. 81".. The 1" Ball fixing. Light weight made from Aluminium. Attaches easily to the steering head tube of fork stems. Easy to fit and completly removable. 2 prong adapter joins mount to case. IMPORTANT: First check that your stem cover can be removed leaving a central hole for the mount to fix in. Simply drop the Fork Stem Motorcycle attachment into the hole of the stem and tighten. The split shaft will expand to fit the inside wall of the fork stem Use an Allen Key to tighten to create a tight fit. PLEASE NOTE: Measure your hole: This option is designed to fit stems that measure from 17. 5mm 20. 5mm 0. 68" 0. 81". What's included? 1 x Phone case 1 x 17. 5mm 20. 5mm 0. 68" 0. 81". Stem Mount Alternative yoke mount sizes available. Always check the case is secure before inserting your phone.