Question about Yamaha Motorcycles
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Posted on Jan 02, 2017
change oil / check valve lash and adjust as needed / check compression / check air filter / adjust tire pressure / basic maintenance inspection just to make sure everything is breaking in properly. Have a good day.
Posted on Aug 12, 2009
SOURCE: yamaha wr125r 2012
Yes. Spend 1500 GBP on the parts and then fit them. You will need to replace the exhaust and the ECU and as you will have spent a lot of money on it already you will have about another 4 bhp. To get anymore you will need to get a tweaked head and cam plus a bore and piston kit to take the engine out to about 185cc. You would be better selling your bike and spending the extra money on a bigger machine or an older one. The Yamaha RD125DX has 16bhp and the early RD125LC made 21bhp. If you really want to tune an engine you should look for a 2 stroke. Tuning is easier and cheaper than 4 strokes. With 4 stokes the tuning involves cam timing and head and piston crown shape.
Posted on Jun 08, 2013
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