This 650 & 750 spring kit will work with ANY high lift camshaft.
This complete spring kit includes47075-T6 hard anodized aluminum retainers,8heat treated steel keepers,4inner and4outer springs and4heat treated lower collars. This kit specifies 105# seat pressure at 1.425" installed height and is good up to .520" valve lift without coil bind. The aluminum retainers only weigh 8 grams each! Depending on your installation height seat pressure will vary. We have used this kit on street bikes and race engines and it has proven to be a winner. Made in USA by Kibblewhite Precision Machining Inc.