whats the difference in the aftermarket clutches vs stock replacement

[Fastorange]

Not to ask stupid questions, But is the aftermarket clutch thicker than a stock. Or are the holes in the aftermarket bigger than stock. An when you are building one for lets say sled pulling. Do you really need to buy ats or suncoast? will the clutches from raybestus work just as well?

 

[Fastorange]

ok, seems no one knows. From what i was told alto clutches are what come in a suncoast kit.

 

[Josh2002cc]

Altos did come in my Suncoast stage 4. The differance has to be in the material as IIRC I was told once the glaze is off the stock clutch it is done however a alto can be "burnt" and still grap. I could be wrong as this was a year ago so don't take my word for it. Altos can be had in differant thicknesses as well.