I've got hyde racing engine guards/skid plates on my gas bikes and prefer them over aluminum. They are more durable and also to a better job of absorbing and distributing impact forces. Hopefully someone will make something similar for the sur-ron.
I got home from travelling to some goodies waiting at my door. A 58 tooth sprocket from Kim (a near work of art!) and an stiff (black) spring for a rockshox boxxer. It was about the same diameter as the stock spring (28.5mm), but quite a few inches longer. I remove the stock spacer from the fork cap and cut a small piece of pvc to fit instead.
The spring seems to be better for my weight (180lbs). The fork rides higher in the stroke and is more plush. Still fiddling with the adjusters to get a setting I like. I added about an inch of preload to the shock. Didn't need to use a tool, just put the bike on the stand and grabbed the spring and collar with my hand and was able to turn it without too much effort. The bike now feels nicely balanced front to back.
The sprocket is great. It adds the low end punch I was looking for and top speed is still adequate for my needs. It also makes wheelies more controllable with the throttle.
I also cut up an old supermoto front fender and got it to fit below the fork brace. It still needs some trimming, but it doing a good job of keeping debris from flying up and hitting the rider. Still need to do something about the rear-fender, it's so short it's useless! I also took of the plastic tag attached to the light, drilled some holes in it and zip-tied it to the linkage to protect the shock.
I've also got some new tires coming, Pirelli scorpion mid softs. Stock front size, but I went a little bigger on the read (100/90-19) and some HD tubes. Hope they fit!