If there's a thread about this, I did not find it.

My speedometer marks 70mph when I am really riding at around 60mph.

How can I fix this?

thank you in advance

 

Are you running stock sprockets?

 

I believe so. I just bought the bike.
BUT is has been lowered in the front to where it is lower in the front than back

 

Your bike is off about 7% from the factory with 16/43 gearing. If the gearing has been changed then its off even more. My 954 with -1 front and +1 rear is off 14.4%. I purchased a SpeedoDRD from the company below. It allows you to input any correction factor that is needed to correct your speedo. They are very small and easy to install.

12oClockLabs

SpeedoDRD (patent pending)
Speedometer "Digital ReCalibration Device"

The smallest electronic speedometer/odometer calibration device in the world
Saves max speed, which can be recalled to your stock speedometer gauge
Widest calibration range on the market (ratio based and multiplier/divider capability)
Built in testing mode to ensure proper installation
Easier to setup than any other device on the market
Priced below any competing product on the market
Simple plug-in installation for many vehicles using factory OEM connectors
Works for any 3 wire Hall Effect Sensor, or 2 wire Ground Switch Sensors
Works for vehicles which display MPH or KPH
Ability to convert MPH to KPH, or KPH to MPH
Ratio based correction in 0.1% steps, up to 99.9% + or -
Fractional frequency multiplier & divider with 0.1 steps, up to 99.9 + or -
Weather proof design to protect against the elements
18" wiring harness (1.5ft)
3 year product replacement warranty
Made in the USA

http://www.12oclocklabs.com/pics/sdrd_3m.jpg

 

sounds like I should fix the height before doing anything. I want it to be even, right now it is lower in the front.

thank you im looking into that device. (expensive tho).