It is the singal best mod you can do!It makes backshifts instant and upshifts faster.It has better belt tension and runs cooler because of less friction.

 

Thanks, does it give you good gains in acceloration?

 

I also remeber reading that the roller secondary gives a 8-10% more power increase do to the lower drive train resistance levels in the clutch. Rollers are alot more efficient then a teflon, or non teflon coated surface.