What are the best front rear sprocket RM 250 2002

SOURCE: what gearing for honda cr 250

Usually, it seems that changing the front sprocket is more cost effective and easier to do. The front sprockets are about $10-$20 and rears are normally around $40-$50. Usually 1T gearing changes made to the front sprocket are the equivilant of a 3T-4T gearing change to the rear. I personally would go up on the front instead of down on the rear. Right now your gear ratio is 3.846 (meaning every 3.846 rotations of the front sprocket, the rear sprocket makes 1 rotation) If you go down 2T in the rear (13/48) your gear ratio would be 3.692 giving you a little less torque and a little more top end. If you go Up 1T in the front (14/50) your gear ratio would be 3.571. This would be about the equivilant of a 46.5T rear sprocket. (If they made it) The nice thing about doing the front sprocket first is the cost. If you decide it's too much difference and you want something in between, you can put the stock 13 back on and then change the rear (and you would only be out the $$ for the front sprocket) If you start with the rear and decide it's not enough then you change the front you're out the $$ for the rear.

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SOURCE: is the 1988 suzuki as power full as the new rm 125

That is a hard question to answer. A stock 1988 will not beat a 2010. If you have motor work done and suspension set up right it might run with a new one. The technology is far superior in the new bikes. A stock new motor is far more powerful than an old bike. The suspension is where you will get alot of your speed also. The new stock suspensions are darn near race ready with minimal tweeking.

SOURCE: will a 2004 suzuki rm 250 front brake line fit on

The '03 and '04 K1, K2, and K3 models use the SKU# 59480-36E30. The '03 and '04 K4, K5, and K6 models use the SKU# 59480-37F00. Personally, I would take the old hose to a dealer and match it up to a new one. The difference in SKU numbers could be simply the supplier or the finish on the metal fittings. If you want to see what K number your bike is, go to the following site and input the VIN number. NOT THE ENGINE NUMBER.
Please rate my answer. Thanks.
http://www.motoverse.com/tools/vin/kawasaki.asp

SOURCE: trying to replace front sprocket. Already took of

Wait until you get new chain and sprockets to do it.