Mountain Bike Handlebar Fork Riser Extender Extender Head Up Adapter Mountain Bike Handlebar Fork Riser Features: - This mountain bike handlebar fork riser is made of high-strength aluminum alloy, anti-corrosion, non-deformation, and durable for long-term use. . - Mountain bike handlebar fork risers with freely adjustable washers to suit your own height. - Mountain bike handlebar fork stem risers are easy to install, just connect the original front fork stem. - This mountain bike handlebar stem riser is suitable for raising the handlebar stems of mountain bikes. How to install: 1. Insert the STEM-UP into the fork riser and place the height adjuster on the STEM-UP until you prefer the riser height. 2. Install the valve stem and wheel in the same direction, and raise the clamping bolt of the valve stem. Mountain Bike Handlebar Fork Riser Specifications: Type: Mountain Bike Handlebar Fork Riser Mountain Bike Handlebar Fork Riser Material: Aluminum Alloy Mountain Bike Handlebar Fork Riser Base Diameter: 1 1/8 in. (28.6 mm) Mountain Bike Handlebar Fork Riser Diameter: 28.6 mm (Standard) Overall Height: 120 mm; 138 mm (Extended) Mountain Bike Handlebar Fork Riser Adjustable Height: 70 mm/100 mm Mountain Bike Handlebar Fork Riser Adjuster: 4 pcs Spacers Package Included: 1 pc x Bike Extender