[supertireguy]

Setup for supermoto from the factory...

GasGas SM450FSR, SM515
Husaberg FS450, FS550, FS650
Husqvarna SM510 or SM610
KTM 450SMR, 510SMR, 625SMC or 690SM
TM SMR450 or SMR530

Possible dirt to supermoto conversions...

Honda CRF450
Kawasaki KLX450
KTM EXC450 or EXC530
Suzuki RMZ450
Yamaha WR450 or YZ450

Converting dirtbikes to SM might be a little more work than you wish to admit. In addition to 17" wheels and brakes there suspension rates and geometry differences. Oftentimes best to buy a bike already properly setup for SM than to muddle thru a conversion.

 

[supertireguy]

If I were to buy a YZ426 will I need to purchase a lighting kit? Its a 2002 model. At current it has only a daytime MOT.

Yup.

I forgot to mention electric/wiring upgrades/switches for the lighting needed to pass street registration. Some regional motor vehicle jurisdictions are more lenient than others. Some only require head/tail lights and a mirror. Others often require turn signals, brake light and horn.

If you begin the SM conversion with an enduro model then the bike usually comes stock with most/all of the needed lighting components.

For example the Honda CRF450X.