TMS New 4" Chrome Solo Seat Springs for Harley Custom Bobber Softail Chopper Cruiser Triumph BSA Norton Honda Bobber Condition: Brand New Color : Chrome Size: 4" Sold in pairs These heavy duty barrel type seat springs are for use when mounting solo seats to properly place your seat for a balanced and comfortable ride. Made of special gauge spring steel, carefully coiled to insure the proper amount of tension. Triple chrome plated for lasting beauty.