Does it looks the back sprocket is OEM or aftermarket. If it is aftermarket then my bet would be the PO did the whole kit and the chain is a 520. I don't think they make too many 525 15 tooth kits.

 

if your tight on cash why not just leave it alone until you can afford what you really want to do?

 

because i hate driving it knowing i'm racking up more miles then I actually am. just hurting my resale.

 

If thats the only reason you want to change it, I wouldn't bother. your speedo is probably only off by about 3% over stock at 55mph. I'm going to guess your at 60 ish at 55. Stock usually has about a 8% higher reading that what your actually going as well, so that adds up to about 5mph all together.

Taking that into consideration. If you put on 10,000 miles, thats only 300 miles extra on your odometer. Not worth the cost of changing if your trying to save money.

 

thanks for the info! If that's true I won't bother with it, I'll just get a speedohealer down the road when I can afford it.

o and btw I'm 7 off at 60. at 60 my speedo says 67.

also, how did you do your math to get 300?

 

3% of 10,000 is 300. 10,000x1.03

Id say its a good choice to get a speedohealer. I waited a long time to get one and wished I would have sooner than I did. My stock gearing had my speedo off about 5mph according to gps, then I went -1 on the front and +1 on the rear and was off by about 8 mph according to gps. Its really nice knowing what my speed actually is now.

 

ok, so then i'm actually 12% off, which would be an extra 1200 miles every 10,000 miles.

 

true, but if your going back to stock, you'll still be around 8% off with the stock gearing. So your improvement will only be about 3%, not the full 12%


Your best bet is to save for the speedohealer like you mentioned before.

 

Also, keep in mind that a stock odometer is calibrated with little or no error but the speedometer is not. If you add a Speedohealer, your odometer will actually be slightly less than actual.

See Speedohealer FAQ Section

 

Man I feel stupid. I forgot all about that. I still think its weird they calibrate the speedometers with error, but not the odometers. I guess they don't want lawsuits for people racking up more miles than they are actually going.

so with that information I forgot. You will only be 300 miles over if you put on 10,000 on the bike.