This whip mount is designed specifically for the 2017 - 2020 Honda CRF450R/X. It bolts up on the right side under the rear fender and next the right side muffler.
Just remove the right side number plate, remove exhaust bolt and slide the HRF CRF450R whip mount in-between the muffler and the sub-frame. Remove the right side seat bolt and replace it with the supplied longer bolt. Reinstall the exhaust bolt and then the side number plate, then the longer seat bolt.
**** HRF RECOMMENDS USING A 1/4" OR 5/16" THICK SAFETY FLAG. DO NOT USE THE BIG 3/8" THICK BUGGY/TRUCK FLAGS. THESE ARE TOO BIG FOR BIKES ****