One drop and you'll likely be rethinking that opinion. I've seen them prevent many Tupperware Parties (plastics swaps). There's a good write up on rc51.org under the mods page. It's got all the tips you'll need.
A forum community dedicated to Honda RC51 owners and enthusiasts. Come join the discussion about reviews, performance, V-Twin racing, modifications, classifieds, troubleshooting, maintenance, and more!