●Separate sold special driven sprocket is required for installation.(Standard sprocket cannot be used.)）●Wheel replacement, including inching down, changes the steering stability and braking characteristics.Be very careful until your body becomes accustomed to the changes.●Parts may be required separately, depending on the motorcycle model.Active Digital Monitor is recommended for meter adjustment.●The rear wheel size changes to 17 inch.Use a height adjustment kit (required separately) to adjust the motorcycle height.A 8 mm offset drive sprocket is required for installing a 550-sized rear wheel.Original drive chain case cannot be used.Because it is an inspection item for passing the vehicle inspection, a chain case is required separately.The drive chain case bracket must be cut.Main stand cannot be used for touching the tyre.The footpeg mounting bolt plate may touch the drive chain, depending on aging or each motorcycle unit.In this case, modification such as grinding the plate is required.●Genuine rear brake disc bolt is required separately.。