Has anyone ever tried or seen this?

[guardrail]

http://gforcedivision.com/ecommerce/pro ... ucts_id=32

 

[snowbeast]

Yup have seen it,but unless you are very modified,say 300 plus hp,you wont need to replace your primary yamaha clutch,it is that good,period!! Lets just say it blows all the rest away,even when you modify your primary weights,as long as you stay with stock sheeves,and dont run speed sheeve,your stock yammi primary is an awsome clutch,easy on belts,runs cool,and shifts out completely,if calibrated properly.