M1000 twins from Jaws on hand at Pure Addiction, need fuel tuner to run them, (Boondocker, Boss...etc)
From Jaws Performance :
A lightweight set of twins that add an easy 25 hp while maintaining the stock rpm to your M1000. These powerful pipes see a tremendous increase throughout the entire power band while removing weight. A fuel control system and clutching adjustments are required. They are silenced with our lightweight twin mufflers. They are recommended for 3000 ft and above.