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: Hello, i have a yamaha dt 125 r motorcycle and I
You could ask someone to hold the rear brake on, supposing the chain is still on the front and rear sprockets it will hold it still for you!
SOURCE: what jet kit should i
JD jet kits give you a few options
I ended up using The red needle at 5 notches down
up from 165 to 170 main.
up from 45 pilot to 48 pilot
You might just want to try a 170main first and see how it goes
SOURCE: 07 YZ450F First gear is to tall but then it peaks
Find out what the tooth count on the rear sprocket was from the factory and see if you have a smaller sprocket than stock. THIS WILL BE FOR A FASTER TOP END.
a larger sprocket will give more power /rpm less speed.
GOOD Luck
SOURCE: trying to replace front sprocket. Already took of
Wait until you get new chain and sprockets to do it.
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