Polaris Clutch weights in Apex

[orchie19]

Have a set of Polaris S1 Clutch weights that came in a Rx1 clutch i picked up. Has anyone run theses withgs in an apex. It came with a h/c primary spring. Thoughts?

 

[orchie19]

anyone?

 

[orchie19]

turns out they are 72gm weights from speedworks. rpms seam right with a h\c black spring

 

[tedgoesfast]

i have used stright line perf pin kits and used cat weights and polaris weight with good sucess.But used only 56 grams with a54 weight then added some.