Here is how I winterized my 08 883 sportster:
Front wheel changed to 21"
Enduro tyres with 3mm spikes, 250 + on each tyre
Shock absorbers rised 2 " fore and aft
Rised front fender
Enduro pegs, controls and handelbars
Heated and wind protected grips
Engine oil and battery preheating
Lighter oils
Fixed connection for battery charger,
Electrical outlet (for heated clothes)
220v connection to fixed 220v to 12 converter (preheating)
Light weight electrical winch
Alarm system removed.
Xenon lights
On off swithch for lights (starting)
and bits and pices....
as for my 07 SERK, she hibernates at the dealers garage through the finnish winter.
w4p2