I finally found a TW locally that was a good deal. I too would like to know what is recommended for extra power, without sacrificing reliability and too much fuel economy. My bike has had work done to it, including a 225 head/piston, K&N filter (cut up airbox), and 250 Ninja muffler. I had just begun to research the modifications when I found this forum. I would love to hear opinions on whether or not these things are harmful to the engine or even worth the extra noise that the different muffler makes. Any input would be great. Thanks.
Sebastian can source a stroker crank and bore kit, up to 300cc. Requires boring the case and head. TTR 6-speed trans and clutch can be fitted on a modified TW countershaft. Big bore 250cc TTR engine from xr100.com complete from carb to exhaust can be had. you must provide the engine to the builder for mods, then refit the TTR parts with the modded TW countershaft, then stuff it all in the TW cases. That'll about double your horsepower, and kill your reliability.
Hi and congrats on the new bike. These little bikes are great and a real ball of fun to ride, but as for power and speed...well that wasnt in their design. I have an 09 and once broke in, felt the highway speed was just alittle lacking, so i did a sprocket and chain upgrade and ended up pleasantly surprised with the outcome. Just going from stock to 47T rear made the bike come alive, lot lower rpm on the flats but still lots of grunt on the trails. The chain is quieter and has smoother shifts as it doesnt stretch like the stock chain did, every trip it needed adjusting. This does nothing for more power, but when i purchased the bike i knew i wasnt going to set a new land speed record. The only way this bike will clear 100 mph is if you ride it over a cliff. I would recommend just enjoying it for its original design, an awesome trail machine! I have out-rode two stroke smokers and an XT350 on the trail, but they left me in the dust on the road, small price to pay for a great day riding.
So just enjoy it and the fuel mileage it gets, the great grip on the slopes and the fun of just knowing you have a head turning machine.
If your chain is worn, both sprockets are also worn. The Yamaha rear wheel sprocket is a quality part. Spend a little extra on a 15 tooth countershaft sprocket. That will have about the same effect as a 47 tooth rear wheel sprocket and last longer. O-ring chains mean less maintaining and more riding. A lot less and a lot more. Definately worth the money.
Don't know who posted it, but someone asked if anyone had any specs on 0-60 mph for the T-Dub. The reply was 10-12 seconds for a stock bike and measured with a CALENDAR ! Despite all the money you may pour into this beast, you'll not change this spec significantly. My stock '10 cruises on a flat road at 60 mph @ 7000 rpm. I've seen 68 mph at times in cruise. Vibration sets in around 53 mph so that's where I generally ride. I might be interested in a 47T rear sprocket, but my hills in PA may prohibit that mod. And by the way, at my normal driving I'm getting 83 mpg!