The WR250R is an incredible bike, but it has a few issues that need to be addressed. The first glaring issue in my opinion is the stock gearing. When I'm loaded up with camping gear and heading down the highway uphill into a headwind, I just won't pull 6th gear. Downshifting to 5th to gain some speed, then up shifting to 6th just to loose it again can be real aggravating and makes for a long day in the saddle. Gearing the bike down eliminates this. I swapped out the front sprocket for a 12T and that gave the bike plenty of power to pull 6th gear down the highway all day long. Keeping the stock front 13T and going up in the rear to a 46T will give you the same results, but requires a longer chain.
Now gearing down also exacerbates the second glaring issue that this bike has bone stock. The speedometer is off. It's off from the factory more than any speedometer I've ever seen before and since it is driven off of the transmission and not the front wheel, once you gear the bike down it is even worse. It is not off by a little bit, either. Mine was off nearly an incredible 15%. That is completely unacceptable. Since I use my bike daily for commuting in all kinds of traffic situations I had to have a different speedometer reading memorized for all the different speed limits I encountered every day. It was annoying to say the least. Notice I said "was".
Enter our good man Brooks at www.12oclocklabs.com
Being an electrical genius and obviously as frustrated with the WR's stock speedometer error as the rest of us, he went about designing and manufacturing the smallest, lightest, simplest, plug-and-play speedometer calibration device ever invented. I have GOT to get my hands on one of those. A few emails were exchanged and my new speedoDRD arrived neatly packaged just a few days later. To say I was ecstatic to see it would be an understatement . . . but would it work?
Right out of the box with clearly written instructions and the SpeedoDRD protected with foil.
Removing the foil reveals the SpeedoDRD itself.
I had planned on doing an in-depth installation write-up, but honestly, there is nothing to it. Remove the seat and the left side panel to gain access to the speedo connector, which you will find right above the negative battery terminal. Unplug the stock connector and plug in the new speedoDRD. That's it. Since the speedoDRD comes with oem type connectors it will only fit one way (male to female), so there isn't really any way to hook it up incorrectly.
Here it is installed.
Next comes the setup. I am not going to go into detail on the actual setup procedure because it comes with clearly written instructions, and if you are still stumped, Brooks has videos of the entire setup procedure on his website - www.12oclocklabs.com
I had checked my speedometer against my gps earlier and found that at 65 on the gps, I was somewhere between 76-77 mph on my speedometer. Using the conversion calculator from 12o'clock's website, I plug in a gps reading of 77 mph and a speedometer reading of 65 mph to get a -15.6% correction ratio to start with. I plug that into my speedoDRD, hook up my gps and go for a ride. It is darn near perfect, but I wanted it even closer.
I stop in a parking lot, pull the seat and do a quick adjustment down to -14.9%. Pulling the two bolts to remove the seat takes longer that re-adjusting the speedoDRD. It really is a nice little unit. Back on the road again, I find that my new ratio of -14.9% gets me dead on speedometer readings all across the board. It works flawlessly.
I feel I need to mention here that since Yamaha in their infinite wisdom made the bike with an odometer and a speedometer that didn't match to begin with, you will never be able to have them both be perfect. The speedoDRD affects both, but since they don't match from the factory, they will never match even with the speedoDRD. It is just something you will have to deal with. With my speedometer dead-nuts accurate, I found my odo to be showing about 7.6% slow. The only thing I use my odo for is maintenance and I always do it early anyway, so I am not concerned about it at all. I've never gotten a speeding ticket for how far I've gone . . . only for how fast I'm going. Being able to know exactly how fast you're going will not only make it easier to stay legal, but also safer since now you don't have to guess how fast you are going along with other traffic.
If you ride your bike on the street at all, I can't think of any other aftermarket modification that will make your ride safer and less stressful than an accurate speedometer. This product gives you one. I can't say enough good things about it.
Now go to www.12oclocklabs.com and pick up one for yourself