Primary Clutch / Oversize Rollers Roller Size:1mm Oversize Rollers and work so well

and work so well

It helps reduce underhood heat and won't melt any side panels

This cuts cost because you are not paying for all the shims that normally come in the kit

Extensively dyno-tested to maintain or gain horsepower throughout the entire RPM range

Crafted from a proprietary high-density synthetic fiber

Primary Clutch / Oversize Rollers Roller Size:1mm Oversize Rollers and work so wellTune your TRA to perfection with these stock or oversize rollers for your primary. Stong construction will not wear out quickly and roll extremely smooth. Choose from stock (10 gram), 1mm oversize (12. 5 gram), or 2mm oversize (15. 5 gram). Sold as a set of three.