I own a 2003 gtx sc and i would like to know if there is any difference in the components of the supercharger kit of the stock 2003 sc with the stock 2004 and 2005 models? how would you know when to change the clutch of the SC? thanks

updated clutch is ceramic.

You'll know you have SC troubles when your ski only hits 6400 or so RPMs. There is also a test where you can use a torque wrench to determine at what force the clutch slips and compare to specs.

I don't know what the specs for slippage are.

thanks for the info, can the updated ceramic clutch be installed in the 2003 model sc? so far my ski is reving upto 7500 to 7600 with the riva setup

yes the ceramic can be fitted to the '03. It is the fix when the original goes.

If you aren't having problems with it I wouldn't mess with it. "if it ain't broke..."

Sounds like all is well if you are pulling 75-7600 RPMs, I'd keep the oil and filter changed, put in new plugs seasonally and enjoy your ride. What color is it?

I have the part number for the upgrade kit at my other place but won't be there for (possibly) a few weeks. I'll post when I retrieve it if you'd like but who knows how many times SD has superceeded the P#...

How many hours on your ski? You using synthetic oil?

I have'nt checked the plugs yet But I just changed them ti iridium plugs but the previous one the burn seems to be good, Approx. 106 hrs and i use mineral oil. about 30 hours with the riva kit. here in our place its all year round season i live in a tropical country. yeah I would certainly appreciate any info I can get. thanks

Trey - Booster clutch upgrade kit P# - 420881940

you will need to change the ceramics to steel as mine went last season and i needed a full engine strip and rebuild you need to get the reinforced steel ones seadoo have brought out lasts about 2-3 years but will not shatter only wear so when u get low rpms u need to change them but at least you wont be paying out for rebuilds like you might by sticking with ceramic washers