Big Dog is certainly the most successful "custom" builder, and you can see why. They married classic custom styling. ProSport
The best handling Big Dog in the pound, the ProSport boasts a low stance rubber-mount frame that sports an all-new single-tube swingarm. We added a sculpted one-piece steel fuel tank and all new machined wheels with matching rotors and pulley. Now with 18 inch wheels front and rear, a 180 rear tire, and inverted front forks, the Prosport looks as good as it handles. The TP 107 cubic inch motor and 6-speed transmission pour on the ultimate power, but all in a low vibration package. Performance at its finest - the Big Dog ProSport.