If you are wanting more low end performance and power you will need to replace the primary. No way to get more low end out of stock primary. Aftermarket clutches use a smaller one way bearing giving them a lower gear ratio when taking off from a dead stop. The clutch kit tunes your wide open throttle to the peak hp range which is 6900 to 7200. Low engagement spring drops the full engagement point at take off allow primary to grab belt tighter quicker but don’t change the gear ratio.
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