iGot2Fly,
It depends on what you weigh, do you ride 2 up (alot), and to some extent how you ride. These factors + bike weight translate to loads that the front and rear suspension have to handle.
You can google some youtube videos and see how low the front nose dips, especially when you brake [hard]. The weight transfer really drops the nose.
I would suggest you start with dialing in all your preload on the shocks as a first step (since you indicate you scrape now). Depending on what you weigh, you have 2 options, the aftermarket preload adjuster or the spring spacer. If you are around 180 or less and you don't ride 2 up, the preload adjuster might give you enough extra capacity to not bottom out. If you are north of 200 and/or you ride 2 up a lot, I would suggest the spring spacer as this device changes the effective rate of the spring and has the potential to give you the most extra capacity.
There is no free lunch; each of these types of devices uses the oem [weak] spring. If it were me, I'd just change the spring as that cost is about the same neighborhood as these devices. Your other alternative is to get aftermaket shocks with the stronger springs (that also have greater preload adjustability). but they are 5-7 times the cost of these devices/spring change.
Hope this helped.
Jerry
