Maximum development of the Norton twin that somehow managed to be as reliable as the stock model! Lovely blend of power, handling and sheer joy, but ruined at high speed by enough vibration to trim off excess fat from the rider. As vibration limits performance better value’s found in the milder Norton’s but it’s a great pose tool, just make sure it’s had a good rebuild (lack of oil leaks, lack of vibes below 5000rpm, quiet motor, etc)