I took my 2009 250R from 372lbs down to 310-lbs with tossing pretty much all stock parts except for frame, tank, engine, carbs and seat. And also includes chopping unnecessary parts of frame off. Lighter wheels & tyres. Hollow chromoly axles. Ti and alloy nuts & bolts liberally sprinkled around.
Was gathering data on what’s possible with 400 to determine if I want to build one for next season. No one inspects or protests 250s so I can bend rules liberally. But Ninja 400s caused quite an upset this year with times that puts them in top 5-10 of every class! Anyone with 400 seems to have spotlight on them.
