^kids not 100% right. if your going inverted compression (threadless without brass knuckes) you need:
threadless fork
bars WITH slits and you will need to install a starnut in the bars
threadless headset (you take ur stock one out and install a new one)
a compression bolt (will come with most compression sets, bolt and starnut come with it)
and you will use your existing clamp
* you will need basic knowledge on how to install a starnut in your bars and how to install a headset
and if your going SCS (standard compression system) you will need:
bars WITHOUT slits (with no starnut)
threadless fork with a starnut in the fork
threadless headset
brass knuckes
*you will need to know how to install a starnut in your fork tube, you will not need to buy a starnut though, most threadless headsets come with starnuts that will fit in your forktube.
**there is an SCS video by Buff if your confused
pros and cons are obvious. scs is easier to do if your buying all new stuff. the only reason why people use Inverted Compression Systems is because they have bars with slits and starnuts and have had them before SCS came out. And people use ICS (inverted compression) if they are weight freaks/ dont like SCS/ are anti-proto buyers.
so pretty much a recap....SCS, if you are buying all new parts, will be more easy and more efficient than going ICS. You can go ICS, but it requires a bit more work when you want to take apart your scooter.
IN MY OPINION- everything else i wrote is fact. but my opinion would be go scs. And either ICS or SCS, buy from inward because they install starnuts for you without you having to email them about it.
haha idk why i wrote all this, but mods please lock this. and your welcome kid.