There is only one type of Kevlar disc to my knowledge. You should be able to slip it a good deal but without the extended release arm clutch control is more difficult.

I've never had a issue with bone stock clutch in good shape even beating on it

Wow thats some game of tug-o-war!

Ok im pretty sure at this point stock is going to be just fine :-)

It is easy to spin tires-put the tractor to work.

Put a set of ag tires on, add 100 to 150 pounds and them hook a moldboard plow on it. Them go plow some Northwest Ohio soil. This soil will make a tractor that can pull a 5 bottom plow be lucky to pull a 4 bottom plow.

You will have clutch slipage with a stock spring. I'm using a spring from a New Holland/AGCO cultivator. It is a 500 pound rated spring. Stock spring is 200 to 250 pounds. You will have to use a spacer between the driveshaft and inside the spring. Part number for spring is PECP1511A1 (New Holland) and EP1511 (AGCO) . Because of the spring length the spring has to be cut into 2 pieces....you get 2 springs out of it.

Cub Cadet Classics sell a blue spring that has the same tension as my cultivator spring set up. My clutch set up has been my hop up 100 for 4 years.

I aslo use a kevlar clutch disc because the price and it has less slippage.

I aslo replace all the pins and bushing in the clutch driver. I will use a split collar instead of a pin to hols the main spring in place. THe hole in the driveshaft makes a weak spot in the driveshaft.

My clutch set up may be overkill.....I prefer to build it once and not be afraid to push the limits.

My Uncle Dick topic has a clutch rebuild section in it.

Yea that pic was taken after the work had been done loaded tires with about 3 psi in them pulling a 125 with 3 of the four wheels locked up I just started to have fun at that point. I havnt had it slip the clutch yet that day was 3rd gear 3/4 throttle I ran out of traction or engine before anything