No judgements here, fellas, just the facts.....per our local Kawi dealer: "We have changed several 800 Classics to a 38T rear, but they started with a 42T rear. Customers all love it!" (That computes to a 10.5% change from stock.) He then told me that one tooth (17 up to 18) on the front would yield 6% RPM drop, about 250 RPM through the whole range. Two teeth on the rear (42 down to 38) is another 5% change from stock. As it turns out, I have to consider my surroundings before I go 18/38, like elevation (about 1560 feet @ local airport), flat terrain (if I get up on an 8' stepladder, I can see Saskatchewan), and the elements (30 MPH is just a nice breeze). Decisions, decisions!

