They are rated at 9 lb load per mount used

(See 'Additional Information' for specific fitment details)

and bolts in place using the stock fender mount nut

Includes stainless steel hardware

Solo Seat Bolt-On Spring Mounts - Chrome Vendor_Kustom Tech They are rated at 9These bolt on spring mounts can be mounted on a frame without having to weld. This kit contains the seat spring mounts, saddle washers, bolt and lock washer which are all beautifully chrome plated. This kit can be installed by drilling two 5 16 inch holes through your seat cross tube and bolting them in place with the included hardware. In addition to a very easy install, if you decide to change your seat style in the future it is much easier to