i would save me up $1750.oo and order the tmw offroad 09-2010 power bundle. it comes with muzzy exhuast, afe intake kit, afe CVT filter, Dalton clutch, MDS Charge FI, but thats my opinion. i think stock teryx has like 25-26hp, these bolt ons bump ya up to 40hp atleast thats what tmw rep. told me. MSD is already mapped for the mods in the kit to.
Save money and don't get the AFE intake, waste of money produces nothing and the CVT filter is not a good idea anymore. Heat is a bigger problem than the dust.
On our dyno a stock 09 Teryx gets 29 and with those mods minus the intake and CVT filter you get about 36.
Don't always believe what someone who is selling you something is saying, even though I sell something this time it does not apply!! LOL
I would say, MSD, Muzzy, Dalton and OD clutch plate would be the best of the best as far as bolts ons go.
Two other optional items is some kind of set to stop the oil from getting into the plenum, several homemade set ups or we have a ready to go kit called a STOP kit and then a billet air filter adapter to insure you won't have dirty air slipping by the stock set up.
You will find most of the vendors here are right on and the members here are very helpful.