The new single valve spring delivers 15% more pressure across the board than the factory part. Also, with a coil bind of 0.910", the Crower spring allows for more cam lift than factory springs will allow. Stock O.D., so no machine work is required to the cylinder head. Crower titanium retainers weigh in at 7 grams vs. stock steel at 14.5 grams. Pickup additional rpm's by reducing valve train weight. Fits Crower spring (#68190) or factory spring. Purchase #87095 for the titanium retainers.
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