I like these:
Water cooled so they should last a long time. I'll take a Thruxton R front end on the Street twin, and might as well take it's piggyback shocks too. It would be great if they weighed 425 lb dry, but I assume they'll be 500 wet.
14 year old twins scale the universe.....
This is pretty awesome and worth the time....I promise.
Hope they got an A
http://abcnews.go.com/Technology/page/scale-universe-cary-michael-huang-california-high-school-15573968