New upgraded Primary Spring that has 1\3 the tension of the factory primary spring
This spring is made from ASTM A228 Music Wire and is made in the USA
This spring will lower your RPMs aproxamatly 500 - 600 across the entire operating range reducing engine noise.
There is very little reduction in Engine Braking with lighter primary spring.
Lighter Primary Spring
This spring reduces RPMs across the power band with no perceived loss in performance and should help prevent weight and roller wear by applying lighter pressure to the rollers and weights.
You will have some reduced engine braking with a lighter spring but it is very minimal.
See Chart for RPMs vs. Speed with various weights vs. the factory Kawasaki Primary Spring CLICK HERE
Free Shipping on this product in the lower US 48 States
