Im gearing up literally to go on the big dual sport Lake Hughs to jawbone trip in So Cal in two weeks (See places to ride- California for the post) and need to get some more top end. 99 WR400. I have the stock 14 tooth front sprocket on, stock rear and want to go a tooth down in the front for more top end and faster mph. My question is do I do down a tooth to 13 or up a tooth to 15 to get more MPH-top end. I know it sounds stupid and I think the answer is down a tooth to 13 but I just want to make sure. I know this isnt to best way to regear but Its just for this trip and dont want to swap the back or do a complete change so I was hoping to do just the front one tooth help??? Also does anyone run 13 in the front with the stock rear, whats the cruising speed in 5th it likes to run, Im looking for about 65mph or so and now with the 14 in the front it likes to do about 50 to 55 comfortably. If my calculations are wrong and someone thinks i should do something else to acheive 65 in 5th comfortably, please express your opinion thanks guys... Thanks.