...and if your doing the flapper mod then you should do the PAIR mod while you have the bike stripped down. And, if you wanna lighten the bike even further then check out thorstens web site and pick up a carbon fiber snorkel. it has about twice the volume and none of the flapper crap!
www.honda-rc51.de
..hell, while your at it pull one of those pesky fans off the inside of the radiators to A) cut some more weight and B) allow air to flow through at low speeds, since the fan operates in the opposite direction on air flow when moving. good luck and check out the forums at
www.rc51.com mucho information there!!! just do a search first! LOl