I was gonna say aluminum rims would probably be the most noticable difference. Not so much in overall weight savings, but in less rotating mass to turn. How bout ditching the rear peg hangers and NOT putting on solo finishers? Lighter mirrors? Instead of the Freak, remove all side covers, and use a carb brace, ditch the freak brackets all together. Ditch upper and lower fork shrouds... what else. Yeah the stock pipes are meaty. Way too heavy.
