Here in northern Wisconsin we can expect winter temps to drop below -10 degrees below zero. My bikes are in my uninsulated garage. I have removed the batteries and seats. I've sprayed WD-40 on everything that isn't painted. Fuel is full and preserved. Is there anything else I can do to protect my bikes from 5 months of cold dark misery ?
you may want to use something to push the brake pads away from the disc into the caliper, this stops the pad witness mark often left on the disc during lay-up and also protecs the exposed caliper pistons.
If you plan to change the engine oil at the start of the new season as many owners do, consider changing it at the end of the season instead. What this does is remove all the acids and contaminants etc. found in used oil as-well as any condensation within the oil.
Any time you’re near the bike while stored just give the clutch lever a couple of pulls. This activates the clutch pack and allows oil to flow between the plates reducing the chances of them sticking to each other. Tbh. because it’s a cable and not hydraulic clutch then the lever could be tied even half way to the bars without stressing out anything to separate the clutch plates.
Do not be tempted to start up and let the engine idle in the miss belief your helping it, this only lets fuel wash past the piston rings into your oil and attracts condensation when the hot engine cools.